ae6ad17c5d3e3ba0d66e4f376af14005c22ef2dc
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112   --disable-avserver       deprecated, does nothing
113
114 Component options:
115   --disable-doc            do not build documentation
116   --disable-avdevice       disable libavdevice build
117   --disable-avcodec        disable libavcodec build
118   --disable-avformat       disable libavformat build
119   --disable-avutil         disable libavutil build
120   --disable-swscale        disable libswscale build
121   --disable-avfilter       disable video filter support [no]
122   --disable-avresample     disable libavresample build [no]
123   --disable-pthreads       disable pthreads [auto]
124   --disable-w32threads     disable Win32 threads [auto]
125   --disable-network        disable network support [no]
126   --disable-dct            disable DCT code
127   --disable-error-resilience disable error resilience code
128   --disable-lsp            disable LSP code
129   --disable-lzo            disable LZO decoder code
130   --disable-mdct           disable MDCT code
131   --disable-rdft           disable RDFT code
132   --disable-fft            disable FFT code
133   --disable-faan           disable floating point AAN (I)DCT code
134
135 Hardware accelerators:
136   --enable-d3d11va         enable D3D11VA code
137   --enable-dxva2           enable DXVA2 code
138   --enable-vaapi           enable VAAPI code
139   --enable-vda             enable VDA code
140   --enable-vdpau           enable VDPAU code
141
142 Individual component options:
143   --disable-everything     disable all components listed below
144   --disable-encoder=NAME   disable encoder NAME
145   --enable-encoder=NAME    enable encoder NAME
146   --disable-encoders       disable all encoders
147   --disable-decoder=NAME   disable decoder NAME
148   --enable-decoder=NAME    enable decoder NAME
149   --disable-decoders       disable all decoders
150   --disable-hwaccel=NAME   disable hwaccel NAME
151   --enable-hwaccel=NAME    enable hwaccel NAME
152   --disable-hwaccels       disable all hwaccels
153   --disable-muxer=NAME     disable muxer NAME
154   --enable-muxer=NAME      enable muxer NAME
155   --disable-muxers         disable all muxers
156   --disable-demuxer=NAME   disable demuxer NAME
157   --enable-demuxer=NAME    enable demuxer NAME
158   --disable-demuxers       disable all demuxers
159   --enable-parser=NAME     enable parser NAME
160   --disable-parser=NAME    disable parser NAME
161   --disable-parsers        disable all parsers
162   --enable-bsf=NAME        enable bitstream filter NAME
163   --disable-bsf=NAME       disable bitstream filter NAME
164   --disable-bsfs           disable all bitstream filters
165   --enable-protocol=NAME   enable protocol NAME
166   --disable-protocol=NAME  disable protocol NAME
167   --disable-protocols      disable all protocols
168   --enable-indev=NAME      enable input device NAME
169   --disable-indev=NAME     disable input device NAME
170   --disable-indevs         disable input devices
171   --enable-outdev=NAME     enable output device NAME
172   --disable-outdev=NAME    disable output device NAME
173   --disable-outdevs        disable output devices
174   --disable-devices        disable all devices
175   --enable-filter=NAME     enable filter NAME
176   --disable-filter=NAME    disable filter NAME
177   --disable-filters        disable all filters
178
179 External library support:
180   --enable-avisynth        enable reading of AviSynth script files [no]
181   --enable-bzlib           enable bzlib [autodetect]
182   --enable-frei0r          enable frei0r video filtering
183   --enable-gnutls          enable gnutls [no]
184   --enable-libbs2b         enable bs2b DSP library [no]
185   --enable-libcdio         enable audio CD grabbing with libcdio
186   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
187                            and libraw1394 [no]
188   --enable-libdcadec       enable DCA decoding via libdcadec [no]
189   --enable-libfaac         enable AAC encoding via libfaac [no]
190   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
191   --enable-libfreetype     enable libfreetype [no]
192   --enable-libgsm          enable GSM de/encoding via libgsm [no]
193   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
194   --enable-libmfx          enable HW acceleration through libmfx
195   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
196   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
197   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
198   --enable-libopencv       enable video filtering via libopencv [no]
199   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
200   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
201   --enable-libopus         enable Opus de/encoding via libopus [no]
202   --enable-libpulse        enable Pulseaudio input via libpulse [no]
203   --enable-librtmp         enable RTMP[E] support via librtmp [no]
204   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
205   --enable-libsnappy       enable Snappy compression [no]
206   --enable-libspeex        enable Speex de/encoding via libspeex [no]
207   --enable-libtheora       enable Theora encoding via libtheora [no]
208   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
209   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
210   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
211   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
212   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
213   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
214   --enable-libwebp         enable WebP encoding via libwebp [no]
215   --enable-libx264         enable H.264 encoding via x264 [no]
216   --enable-libx265         enable HEVC encoding via x265 [no]
217   --enable-libxavs         enable AVS encoding via xavs [no]
218   --enable-libxcb          enable X11 grabbing using XCB [no]
219   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
220   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
221   --enable-libxvid         enable Xvid encoding via xvidcore,
222                            native MPEG-4/Xvid encoder exists [no]
223   --enable-mmal            enable decoding via MMAL [no]
224   --enable-nvenc           enable encoding via NVENC [no]
225   --enable-openssl         enable openssl [no]
226   --enable-x11grab         enable X11 grabbing (legacy) [no]
227   --enable-zlib            enable zlib [autodetect]
228
229 Toolchain options:
230   --arch=ARCH              select architecture [$arch]
231   --cpu=CPU                select the minimum required CPU (affects
232                            instruction selection, may crash on older CPUs)
233   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
234   --enable-cross-compile   assume a cross-compiler is used
235   --sysroot=PATH           root of cross-build tree
236   --sysinclude=PATH        location of cross-build system headers
237   --target-os=OS           compiler targets OS [$target_os]
238   --target-exec=CMD        command to run executables on target
239   --target-path=DIR        path to view of build directory on target
240   --target-samples=DIR     path to samples directory on target
241   --toolchain=NAME         set tool defaults according to NAME
242   --nm=NM                  use nm tool
243   --ar=AR                  use archive tool AR [$ar_default]
244   --as=AS                  use assembler AS [$as_default]
245   --cc=CC                  use C compiler CC [$cc_default]
246   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
247   --ld=LD                  use linker LD
248   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
249   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
250   --host-cc=HOSTCC         use host C compiler HOSTCC
251   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
252   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
253   --host-ld=HOSTLD         use host linker HOSTLD
254   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
255   --host-libs=HLIBS        use libs HLIBS when linking for host
256   --host-os=OS             compiler host OS [$target_os]
257   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
258   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
259   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
260   --extra-libs=ELIBS       add ELIBS [$ELIBS]
261   --extra-version=STRING   version string suffix []
262   --optflags=OPTFLAGS      override optimization-related compiler flags
263   --build-suffix=SUFFIX    library name suffix []
264   --enable-pic             build position-independent code
265   --enable-thumb           compile for Thumb instruction set
266   --enable-lto             use link-time optimization
267   --env="ENV=override"     override the environment variables
268
269 Advanced options (experts only):
270   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
271   --disable-symver         disable symbol versioning
272   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
273   --disable-safe-bitstream-reader
274                            disable buffer boundary checking in bitreaders
275                            (faster, but may crash)
276   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
277   --enable-sram            allow use of on-chip SRAM
278
279 Optimization options (experts only):
280   --disable-asm            disable all assembly optimizations
281   --disable-altivec        disable AltiVec optimizations
282   --disable-vsx            disable VSX optimizations
283   --disable-power8         disable POWER8 optimizations
284   --disable-amd3dnow       disable 3DNow! optimizations
285   --disable-amd3dnowext    disable 3DNow! extended optimizations
286   --disable-mmx            disable MMX optimizations
287   --disable-mmxext         disable MMXEXT optimizations
288   --disable-sse            disable SSE optimizations
289   --disable-sse2           disable SSE2 optimizations
290   --disable-sse3           disable SSE3 optimizations
291   --disable-ssse3          disable SSSE3 optimizations
292   --disable-sse4           disable SSE4 optimizations
293   --disable-sse42          disable SSE4.2 optimizations
294   --disable-avx            disable AVX optimizations
295   --disable-xop            disable XOP optimizations
296   --disable-fma3           disable FMA3 optimizations
297   --disable-fma4           disable FMA4 optimizations
298   --disable-avx2           disable AVX2 optimizations
299   --disable-armv5te        disable armv5te optimizations
300   --disable-armv6          disable armv6 optimizations
301   --disable-armv6t2        disable armv6t2 optimizations
302   --disable-vfp            disable VFP optimizations
303   --disable-neon           disable NEON optimizations
304   --disable-inline-asm     disable use of inline assembly
305   --disable-yasm           disable use of nasm/yasm assembly
306
307 Developer options (useful when working on Libav itself):
308   --disable-debug          disable debugging symbols
309   --enable-debug=LEVEL     set the debug level [$debuglevel]
310   --disable-optimizations  disable compiler optimizations
311   --enable-extra-warnings  enable more compiler warnings
312   --samples=PATH           location of test samples for FATE, if not set use
313                            \$LIBAV_SAMPLES at make invocation time.
314   --enable-neon-clobber-test check NEON registers for clobbering (should be
315                            used only for debugging purposes)
316   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
317                            should be used only for debugging purposes)
318   --enable-random          randomly enable/disable components
319   --disable-random
320   --enable-random=LIST     randomly enable/disable specific components or
321   --disable-random=LIST    component groups. LIST is a comma-separated list
322                            of NAME[:PROB] entries where NAME is a component
323                            (group) and PROB the probability associated with
324                            NAME (default 0.5).
325   --random-seed=VALUE      seed value for --enable/disable-random
326   --disable-valgrind-backtrace do not print a backtrace under Valgrind
327                            (only applies to --disable-optimizations builds)
328
329 NOTE: Object files are built at the place where configure is launched.
330 EOF
331   exit 0
332 }
333
334 quotes='""'
335
336 log(){
337     echo "$@" >> $logfile
338 }
339
340 log_file(){
341     log BEGIN $1
342     pr -n -t $1 >> $logfile
343     log END $1
344 }
345
346 echolog(){
347     log "$@"
348     echo "$@"
349 }
350
351 warn(){
352     log "WARNING: $*"
353     WARNINGS="${WARNINGS}WARNING: $*\n"
354 }
355
356 die(){
357     echolog "$@"
358     cat <<EOF
359
360 If you think configure made a mistake, make sure you are using the latest
361 version from Git.  If the latest version fails, report the problem to the
362 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
363 EOF
364     if disabled logging; then
365         cat <<EOF
366 Rerun configure with logging enabled (do not use --disable-logging), and
367 include the log this produces with your report.
368 EOF
369     else
370         cat <<EOF
371 Include the log file "$logfile" produced by configure as this will help
372 solving the problem.
373 EOF
374     fi
375     exit 1
376 }
377
378 # Avoid locale weirdness, besides we really just want to translate ASCII.
379 toupper(){
380     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
381 }
382
383 tolower(){
384     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
385 }
386
387 c_escape(){
388     echo "$*" | sed 's/["\\]/\\\0/g'
389 }
390
391 sh_quote(){
392     v=$(echo "$1" | sed "s/'/'\\\\''/g")
393     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
394     echo "$v"
395 }
396
397 cleanws(){
398     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
399 }
400
401 filter(){
402     pat=$1
403     shift
404     for v; do
405         eval "case $v in $pat) echo $v ;; esac"
406     done
407 }
408
409 filter_out(){
410     pat=$1
411     shift
412     for v; do
413         eval "case $v in $pat) ;; *) echo $v ;; esac"
414     done
415 }
416
417 map(){
418     m=$1
419     shift
420     for v; do eval $m; done
421 }
422
423 add_suffix(){
424     suffix=$1
425     shift
426     for v; do echo ${v}${suffix}; done
427 }
428
429 set_all(){
430     value=$1
431     shift
432     for var in $*; do
433         eval $var=$value
434     done
435 }
436
437 set_weak(){
438     value=$1
439     shift
440     for var; do
441         eval : \${$var:=$value}
442     done
443 }
444
445 sanitize_var_name(){
446     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
447 }
448
449 set_safe(){
450     var=$1
451     shift
452     eval $(sanitize_var_name "$var")='$*'
453 }
454
455 get_safe(){
456     eval echo \$$(sanitize_var_name "$1")
457 }
458
459 pushvar(){
460     for pvar in $*; do
461         eval level=\${${pvar}_level:=0}
462         eval ${pvar}_${level}="\$$pvar"
463         eval ${pvar}_level=$(($level+1))
464     done
465 }
466
467 popvar(){
468     for pvar in $*; do
469         eval level=\${${pvar}_level:-0}
470         test $level = 0 && continue
471         eval level=$(($level-1))
472         eval $pvar="\${${pvar}_${level}}"
473         eval ${pvar}_level=$level
474         eval unset ${pvar}_${level}
475     done
476 }
477
478 enable(){
479     set_all yes $*
480 }
481
482 disable(){
483     set_all no $*
484 }
485
486 enable_weak(){
487     set_weak yes $*
488 }
489
490 disable_weak(){
491     set_weak no $*
492 }
493
494 enable_safe(){
495     for var; do
496         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
497     done
498 }
499
500 disable_safe(){
501     for var; do
502         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
503     done
504 }
505
506 do_enable_deep(){
507     for var; do
508         enabled $var && continue
509         eval sel="\$${var}_select"
510         eval sgs="\$${var}_suggest"
511         pushvar var sgs
512         enable_deep $sel
513         popvar sgs
514         enable_deep_weak $sgs
515         popvar var
516     done
517 }
518
519 enable_deep(){
520     do_enable_deep $*
521     enable $*
522 }
523
524 enable_deep_weak(){
525     for var; do
526         disabled $var && continue
527         pushvar var
528         do_enable_deep $var
529         popvar var
530         enable_weak $var
531     done
532 }
533
534 enabled(){
535     test "${1#!}" = "$1" && op== || op=!=
536     eval test "x\$${1#!}" $op "xyes"
537 }
538
539 disabled(){
540     test "${1#!}" = "$1" && op== || op=!=
541     eval test "x\$${1#!}" $op "xno"
542 }
543
544 enabled_all(){
545     for opt; do
546         enabled $opt || return 1
547     done
548 }
549
550 disabled_all(){
551     for opt; do
552         disabled $opt || return 1
553     done
554 }
555
556 enabled_any(){
557     for opt; do
558         enabled $opt && return 0
559     done
560 }
561
562 disabled_any(){
563     for opt; do
564         disabled $opt && return 0
565     done
566     return 1
567 }
568
569 set_default(){
570     for opt; do
571         eval : \${$opt:=\$${opt}_default}
572     done
573 }
574
575 is_in(){
576     value=$1
577     shift
578     for var in $*; do
579         [ $var = $value ] && return 0
580     done
581     return 1
582 }
583
584 do_check_deps(){
585     for cfg; do
586         cfg="${cfg#!}"
587         enabled ${cfg}_checking && die "Circular dependency for $cfg."
588         disabled ${cfg}_checking && continue
589         enable ${cfg}_checking
590         append allopts $cfg
591
592         eval dep_all="\$${cfg}_deps"
593         eval dep_any="\$${cfg}_deps_any"
594         eval dep_sel="\$${cfg}_select"
595         eval dep_sgs="\$${cfg}_suggest"
596         eval dep_ifa="\$${cfg}_if"
597         eval dep_ifn="\$${cfg}_if_any"
598
599         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
600         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
601         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
602
603         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
604         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
605         enabled_all  $dep_all || disable $cfg
606         enabled_any  $dep_any || disable $cfg
607         disabled_any $dep_sel && disable $cfg
608
609         if enabled $cfg; then
610             enable_deep $dep_sel
611             enable_deep_weak $dep_sgs
612         fi
613
614         disable ${cfg}_checking
615     done
616 }
617
618 check_deps(){
619     unset allopts
620
621     do_check_deps "$@"
622
623     for cfg in $allopts; do
624         enabled $cfg || continue
625         eval dep_extralibs="\$${cfg}_extralibs"
626         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
627     done
628 }
629
630 print_config(){
631     pfx=$1
632     files=$2
633     shift 2
634     map 'eval echo "$v \${$v:-no}"' "$@" |
635     awk "BEGIN { split(\"$files\", files) }
636         {
637             c = \"$pfx\" toupper(\$1);
638             v = \$2;
639             sub(/yes/, 1, v);
640             sub(/no/,  0, v);
641             for (f in files) {
642                 file = files[f];
643                 if (file ~ /\\.h\$/) {
644                     printf(\"#define %s %d\\n\", c, v) >>file;
645                 } else if (file ~ /\\.asm\$/) {
646                     printf(\"%%define %s %d\\n\", c, v) >>file;
647                 } else if (file ~ /\\.mak\$/) {
648                     n = -v ? \"\" : \"!\";
649                     printf(\"%s%s=yes\\n\", n, c) >>file;
650                 }
651             }
652         }"
653 }
654
655 print_enabled(){
656     suf=$1
657     shift
658     for v; do
659         enabled $v && printf "%s\n" ${v%$suf};
660     done
661 }
662
663 append(){
664     var=$1
665     shift
666     eval "$var=\"\$$var $*\""
667 }
668
669 prepend(){
670     var=$1
671     shift
672     eval "$var=\"$* \$$var\""
673 }
674
675 unique(){
676     var=$1
677     uniq_list=""
678     for tok in $(eval echo \$$var); do
679         uniq_list="$(filter_out $tok $uniq_list) $tok"
680     done
681     eval "$var=\"${uniq_list}\""
682 }
683
684 add_cppflags(){
685     append CPPFLAGS "$@"
686 }
687
688 add_cflags(){
689     append CFLAGS $($cflags_filter "$@")
690 }
691
692 add_asflags(){
693     append ASFLAGS $($asflags_filter "$@")
694 }
695
696 add_ldflags(){
697     append LDFLAGS $($ldflags_filter "$@")
698 }
699
700 add_ldexeflags(){
701     append LDEXEFLAGS $($ldflags_filter "$@")
702 }
703
704 add_stripflags(){
705     append STRIPFLAGS "$@"
706 }
707
708 add_extralibs(){
709     prepend extralibs $($ldflags_filter "$@")
710 }
711
712 add_host_cppflags(){
713     append host_cppflags "$@"
714 }
715
716 add_host_cflags(){
717     append host_cflags $($host_cflags_filter "$@")
718 }
719
720 add_host_ldflags(){
721     append host_ldflags $($host_ldflags_filter "$@")
722 }
723
724 add_compat(){
725     append compat_objs $1
726     shift
727     map 'add_cppflags -D$v' "$@"
728 }
729
730 check_cmd(){
731     log "$@"
732     "$@" >> $logfile 2>&1
733 }
734
735 cc_o(){
736     eval printf '%s\\n' $CC_O
737 }
738
739 cc_e(){
740     eval printf '%s\\n' $CC_E
741 }
742
743 check_cc(){
744     log check_cc "$@"
745     cat > $TMPC
746     log_file $TMPC
747     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
748 }
749
750 check_cpp(){
751     log check_cpp "$@"
752     cat > $TMPC
753     log_file $TMPC
754     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
755 }
756
757 as_o(){
758     eval printf '%s\\n' $AS_O
759 }
760
761 check_as(){
762     log check_as "$@"
763     cat > $TMPS
764     log_file $TMPS
765     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
766 }
767
768 check_inline_asm(){
769     log check_inline_asm "$@"
770     name="$1"
771     code="$2"
772     shift 2
773     disable $name
774     check_cc "$@" <<EOF && enable $name
775 void foo(void){ __asm__ volatile($code); }
776 EOF
777 }
778
779 check_insn(){
780     log check_insn "$@"
781     check_inline_asm ${1}_inline "\"$2\""
782     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
783 }
784
785 check_yasm(){
786     log check_yasm "$@"
787     echo "$1" > $TMPS
788     log_file $TMPS
789     shift 1
790     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
791 }
792
793 ld_o(){
794     eval printf '%s\\n' $LD_O
795 }
796
797 check_ld(){
798     log check_ld "$@"
799     flags=$(filter_out '-l*' "$@")
800     libs=$(filter '-l*' "$@")
801     check_cc $($cflags_filter $flags) || return
802     flags=$($ldflags_filter $flags)
803     libs=$($ldflags_filter $libs)
804     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
805 }
806
807 print_include(){
808     hdr=$1
809     test "${hdr%.h}" = "${hdr}" &&
810         echo "#include $hdr"    ||
811         echo "#include <$hdr>"
812 }
813
814 check_code(){
815     log check_code "$@"
816     check=$1
817     headers=$2
818     code=$3
819     shift 3
820     {
821         for hdr in $headers; do
822             print_include $hdr
823         done
824         echo "int main(void) { $code; return 0; }"
825     } | check_$check "$@"
826 }
827
828 check_cppflags(){
829     log check_cppflags "$@"
830     check_cc "$@" <<EOF && append CPPFLAGS "$@"
831 int x;
832 EOF
833 }
834
835 test_cflags(){
836     log test_cflags "$@"
837     set -- $($cflags_filter "$@")
838     check_cc "$@" <<EOF
839 int x;
840 EOF
841 }
842
843 check_cflags(){
844     log check_cflags "$@"
845     test_cflags "$@" && add_cflags "$@"
846 }
847
848 test_ldflags(){
849     log test_ldflags "$@"
850     check_ld "$@" <<EOF
851 int main(void){ return 0; }
852 EOF
853 }
854
855 check_ldflags(){
856     log check_ldflags "$@"
857     test_ldflags "$@" && add_ldflags "$@"
858 }
859
860 test_stripflags(){
861     log test_stripflags "$@"
862     # call check_cc to get a fresh TMPO
863     check_cc <<EOF
864 int main(void) { return 0; }
865 EOF
866     check_cmd $strip $STRIPFLAGS "$@" $TMPO
867 }
868
869 check_stripflags(){
870     log check_stripflags "$@"
871     test_stripflags "$@" && add_stripflags "$@"
872 }
873
874 check_header(){
875     log check_header "$@"
876     header=$1
877     shift
878     disable_safe $header
879     check_cpp "$@" <<EOF && enable_safe $header
880 #include <$header>
881 int x;
882 EOF
883 }
884
885 check_func(){
886     log check_func "$@"
887     func=$1
888     shift
889     disable $func
890     check_ld "$@" <<EOF && enable $func
891 extern int $func();
892 int main(void){ $func(); }
893 EOF
894 }
895
896 check_mathfunc(){
897     log check_mathfunc "$@"
898     func=$1
899     narg=$2
900     shift 2
901     test $narg = 2 && args="f, g" || args="f"
902     disable $func
903     check_ld "$@" <<EOF && enable $func
904 #include <math.h>
905 float foo(float f, float g) { return $func($args); }
906 int main(void){ return 0; }
907 EOF
908 }
909
910 check_func_headers(){
911     log check_func_headers "$@"
912     headers=$1
913     funcs=$2
914     shift 2
915     {
916         for hdr in $headers; do
917             print_include $hdr
918         done
919         for func in $funcs; do
920             echo "long check_$func(void) { return (long) $func; }"
921         done
922         echo "int main(void) { return 0; }"
923     } | check_ld "$@" && enable $funcs && enable_safe $headers
924 }
925
926 check_cpp_condition(){
927     log check_cpp_condition "$@"
928     header=$1
929     condition=$2
930     shift 2
931     check_cpp "$@" <<EOF
932 #include <$header>
933 #if !($condition)
934 #error "unsatisfied condition: $condition"
935 #endif
936 EOF
937 }
938
939 check_lib(){
940     log check_lib "$@"
941     header="$1"
942     func="$2"
943     shift 2
944     check_header $header && check_func $func "$@" && add_extralibs "$@"
945 }
946
947 check_lib2(){
948     log check_lib2 "$@"
949     headers="$1"
950     funcs="$2"
951     shift 2
952     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
953 }
954
955 check_pkg_config(){
956     log check_pkg_config "$@"
957     pkg="$1"
958     headers="$2"
959     funcs="$3"
960     shift 3
961     check_cmd $pkg_config --exists --print-errors $pkg || return
962     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
963     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
964     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
965         set_safe "${pkg}_cflags" $pkg_cflags   &&
966         set_safe "${pkg}_libs"   $pkg_libs
967 }
968
969 check_exec(){
970     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
971 }
972
973 check_exec_crash(){
974     code=$(cat)
975
976     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
977     # are safe but may not be available everywhere.  Thus we use
978     # raise(SIGTERM) instead.  The check is run in a subshell so we
979     # can redirect the "Terminated" message from the shell.  SIGBUS
980     # is not defined by standard C so it is used conditionally.
981
982     (check_exec "$@") >> $logfile 2>&1 <<EOF
983 #include <signal.h>
984 static void sighandler(int sig){
985     raise(SIGTERM);
986 }
987 int foo(void){
988     $code
989 }
990 int (*func_ptr)(void) = foo;
991 int main(void){
992     signal(SIGILL, sighandler);
993     signal(SIGFPE, sighandler);
994     signal(SIGSEGV, sighandler);
995 #ifdef SIGBUS
996     signal(SIGBUS, sighandler);
997 #endif
998     return func_ptr();
999 }
1000 EOF
1001 }
1002
1003 check_type(){
1004     log check_type "$@"
1005     headers=$1
1006     type=$2
1007     shift 2
1008     disable_safe "$type"
1009     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1010 }
1011
1012 check_struct(){
1013     log check_struct "$@"
1014     headers=$1
1015     struct=$2
1016     member=$3
1017     shift 3
1018     disable_safe "${struct}_${member}"
1019     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1020         enable_safe "${struct}_${member}"
1021 }
1022
1023 check_builtin(){
1024     log check_builtin "$@"
1025     name=$1
1026     headers=$2
1027     builtin=$3
1028     shift 3
1029     disable "$name"
1030     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1031 }
1032
1033 check_compile_assert(){
1034     log check_compile_assert "$@"
1035     name=$1
1036     headers=$2
1037     condition=$3
1038     shift 3
1039     disable "$name"
1040     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1041 }
1042
1043 require(){
1044     name="$1"
1045     header="$2"
1046     func="$3"
1047     shift 3
1048     check_lib $header $func "$@" || die "ERROR: $name not found"
1049 }
1050
1051 require2(){
1052     name="$1"
1053     headers="$2"
1054     func="$3"
1055     shift 3
1056     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1057 }
1058
1059 require_pkg_config(){
1060     pkg="$1"
1061     check_pkg_config "$@" || die "ERROR: $pkg not found"
1062     add_cflags    $(get_safe "${pkg}_cflags")
1063     add_extralibs $(get_safe "${pkg}_libs")
1064 }
1065
1066 hostcc_e(){
1067     eval printf '%s\\n' $HOSTCC_E
1068 }
1069
1070 hostcc_o(){
1071     eval printf '%s\\n' $HOSTCC_O
1072 }
1073
1074 check_host_cc(){
1075     log check_host_cc "$@"
1076     cat > $TMPC
1077     log_file $TMPC
1078     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1079 }
1080
1081 check_host_cpp(){
1082     log check_host_cpp "$@"
1083     cat > $TMPC
1084     log_file $TMPC
1085     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1086 }
1087
1088 check_host_cppflags(){
1089     log check_host_cppflags "$@"
1090     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1091 int x;
1092 EOF
1093 }
1094
1095 check_host_cflags(){
1096     log check_host_cflags "$@"
1097     set -- $($host_cflags_filter "$@")
1098     check_host_cc "$@" <<EOF && append host_cflags "$@"
1099 int x;
1100 EOF
1101 }
1102
1103 check_host_cpp_condition(){
1104     log check_host_cpp_condition "$@"
1105     header=$1
1106     condition=$2
1107     shift 2
1108     check_host_cpp "$@" <<EOF
1109 #include <$header>
1110 #if !($condition)
1111 #error "unsatisfied condition: $condition"
1112 #endif
1113 EOF
1114 }
1115
1116 apply(){
1117     file=$1
1118     shift
1119     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1120 }
1121
1122 cp_if_changed(){
1123     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1124     mkdir -p "$(dirname $2)"
1125     $cp_f "$1" "$2"
1126 }
1127
1128 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1129 # system-dependent things.
1130
1131 COMPONENT_LIST="
1132     bsfs
1133     decoders
1134     demuxers
1135     encoders
1136     filters
1137     hwaccels
1138     indevs
1139     muxers
1140     outdevs
1141     parsers
1142     protocols
1143 "
1144
1145 EXAMPLE_LIST="
1146     avcodec_example
1147     filter_audio_example
1148     metadata_example
1149     output_example
1150     qsvdec_example
1151     transcode_aac_example
1152 "
1153
1154 EXTERNAL_LIBRARY_LIST="
1155     avisynth
1156     bzlib
1157     frei0r
1158     gnutls
1159     libbs2b
1160     libcdio
1161     libdc1394
1162     libdcadec
1163     libfaac
1164     libfdk_aac
1165     libfontconfig
1166     libfreetype
1167     libgsm
1168     libilbc
1169     libmfx
1170     libmp3lame
1171     libopencore_amrnb
1172     libopencore_amrwb
1173     libopencv
1174     libopenh264
1175     libopenjpeg
1176     libopus
1177     libpulse
1178     librtmp
1179     libschroedinger
1180     libsnappy
1181     libspeex
1182     libtheora
1183     libtwolame
1184     libvo_aacenc
1185     libvo_amrwbenc
1186     libvorbis
1187     libvpx
1188     libwavpack
1189     libwebp
1190     libx264
1191     libx265
1192     libxavs
1193     libxcb
1194     libxcb_shm
1195     libxcb_xfixes
1196     libxvid
1197     mmal
1198     nvenc
1199     openssl
1200     x11grab
1201     zlib
1202 "
1203
1204 FEATURE_LIST="
1205     gray
1206     hardcoded_tables
1207     runtime_cpudetect
1208     safe_bitstream_reader
1209     shared
1210     small
1211     sram
1212     static
1213     swscale_alpha
1214 "
1215
1216 HWACCEL_LIST="
1217     d3d11va
1218     dxva2
1219     vaapi
1220     vda
1221     vdpau
1222 "
1223
1224 LIBRARY_LIST="
1225     avcodec
1226     avdevice
1227     avfilter
1228     avformat
1229     avresample
1230     avutil
1231     swscale
1232 "
1233
1234 LICENSE_LIST="
1235     gpl
1236     nonfree
1237     version3
1238 "
1239
1240 PROGRAM_LIST="
1241     avconv
1242     avplay
1243     avprobe
1244 "
1245
1246 SUBSYSTEM_LIST="
1247     dct
1248     doc
1249     error_resilience
1250     faan
1251     fft
1252     lsp
1253     lzo
1254     mdct
1255     network
1256     rdft
1257 "
1258
1259 CONFIG_LIST="
1260     $COMPONENT_LIST
1261     $EXAMPLE_LIST
1262     $EXTERNAL_LIBRARY_LIST
1263     $FEATURE_LIST
1264     $HWACCEL_LIST
1265     $LICENSE_LIST
1266     $LIBRARY_LIST
1267     $PROGRAM_LIST
1268     $SUBSYSTEM_LIST
1269     memalign_hack
1270     neon_clobber_test
1271     pic
1272     pod2man
1273     texi2html
1274     thumb
1275     valgrind_backtrace
1276     xmm_clobber_test
1277 "
1278
1279 THREADS_LIST="
1280     pthreads
1281     w32threads
1282 "
1283
1284 ATOMICS_LIST="
1285     atomics_gcc
1286     atomics_suncc
1287     atomics_win32
1288 "
1289
1290 ARCH_LIST="
1291     aarch64
1292     alpha
1293     arm
1294     avr32
1295     avr32_ap
1296     avr32_uc
1297     bfin
1298     ia64
1299     m68k
1300     mips
1301     mips64
1302     parisc
1303     ppc
1304     ppc64
1305     s390
1306     sh4
1307     sparc
1308     sparc64
1309     tilegx
1310     tilepro
1311     tomi
1312     x86
1313     x86_32
1314     x86_64
1315 "
1316
1317 ARCH_EXT_LIST_ARM="
1318     armv5te
1319     armv6
1320     armv6t2
1321     armv8
1322     neon
1323     vfp
1324     vfpv3
1325 "
1326
1327 ARCH_EXT_LIST_X86_SIMD="
1328     amd3dnow
1329     amd3dnowext
1330     avx
1331     avx2
1332     fma3
1333     fma4
1334     mmx
1335     mmxext
1336     sse
1337     sse2
1338     sse3
1339     sse4
1340     sse42
1341     ssse3
1342     xop
1343 "
1344
1345 ARCH_EXT_LIST_PPC="
1346     altivec
1347     dcbzl
1348     ldbrx
1349     power8
1350     ppc4xx
1351     vsx
1352 "
1353
1354 ARCH_EXT_LIST_X86="
1355     $ARCH_EXT_LIST_X86_SIMD
1356     cpunop
1357     i686
1358 "
1359
1360 ARCH_EXT_LIST="
1361     $ARCH_EXT_LIST_ARM
1362     $ARCH_EXT_LIST_PPC
1363     $ARCH_EXT_LIST_X86
1364     loongson
1365     vis
1366 "
1367
1368 ARCH_FEATURES="
1369     aligned_stack
1370     fast_64bit
1371     fast_clz
1372     fast_cmov
1373     local_aligned_8
1374     local_aligned_16
1375     simd_align_16
1376 "
1377
1378 BUILTIN_LIST="
1379     atomic_cas_ptr
1380     machine_rw_barrier
1381     MemoryBarrier
1382     mm_empty
1383     rdtsc
1384     sync_val_compare_and_swap
1385 "
1386 HAVE_LIST_CMDLINE="
1387     inline_asm
1388     symver
1389     yasm
1390 "
1391
1392 HAVE_LIST_PUB="
1393     bigendian
1394     fast_unaligned
1395 "
1396
1397 HEADERS_LIST="
1398     alsa_asoundlib_h
1399     altivec_h
1400     arpa_inet_h
1401     cdio_paranoia_h
1402     cdio_paranoia_paranoia_h
1403     dev_bktr_ioctl_bt848_h
1404     dev_bktr_ioctl_meteor_h
1405     dev_ic_bt8xx_h
1406     dev_video_bktr_ioctl_bt848_h
1407     dev_video_meteor_ioctl_meteor_h
1408     direct_h
1409     dlfcn_h
1410     d3d11_h
1411     dxva_h
1412     gsm_h
1413     io_h
1414     mach_mach_time_h
1415     machine_ioctl_bt848_h
1416     machine_ioctl_meteor_h
1417     malloc_h
1418     poll_h
1419     sndio_h
1420     soundcard_h
1421     sys_mman_h
1422     sys_param_h
1423     sys_resource_h
1424     sys_select_h
1425     sys_soundcard_h
1426     sys_time_h
1427     sys_un_h
1428     sys_videoio_h
1429     unistd_h
1430     valgrind_valgrind_h
1431     windows_h
1432     winsock2_h
1433 "
1434
1435 INTRINSICS_LIST="
1436     intrinsics_neon
1437 "
1438
1439 MATH_FUNCS="
1440     atanf
1441     atan2f
1442     cbrtf
1443     cosf
1444     exp2
1445     exp2f
1446     expf
1447     isinf
1448     isnan
1449     ldexpf
1450     llrint
1451     llrintf
1452     log2
1453     log2f
1454     log10f
1455     lrint
1456     lrintf
1457     powf
1458     rint
1459     round
1460     roundf
1461     sinf
1462     trunc
1463     truncf
1464 "
1465
1466 SYSTEM_FUNCS="
1467     aligned_malloc
1468     clock_gettime
1469     closesocket
1470     CommandLineToArgvW
1471     CoTaskMemFree
1472     CryptGenRandom
1473     dlopen
1474     fcntl
1475     flt_lim
1476     fork
1477     getaddrinfo
1478     gethrtime
1479     getopt
1480     GetProcessAffinityMask
1481     GetProcessMemoryInfo
1482     GetProcessTimes
1483     getrusage
1484     getservbyport
1485     GetSystemTimeAsFileTime
1486     gettimeofday
1487     gmtime_r
1488     inet_aton
1489     isatty
1490     jack_port_get_latency_range
1491     LoadLibrary
1492     localtime_r
1493     mach_absolute_time
1494     MapViewOfFile
1495     memalign
1496     mkstemp
1497     mmap
1498     mprotect
1499     nanosleep
1500     posix_memalign
1501     sched_getaffinity
1502     SetConsoleTextAttribute
1503     setmode
1504     setrlimit
1505     Sleep
1506     strerror_r
1507     sysconf
1508     sysctl
1509     usleep
1510     VirtualAlloc
1511 "
1512
1513 TOOLCHAIN_FEATURES="
1514     as_dn_directive
1515     as_func
1516     as_object_arch
1517     asm_mod_q
1518     attribute_may_alias
1519     attribute_packed
1520     ebp_available
1521     ebx_available
1522     gnu_as
1523     ibm_asm
1524     inline_asm_labels
1525     pragma_deprecated
1526     symver_asm_label
1527     symver_gnu_asm
1528     vfp_args
1529     xform_asm
1530     xmm_clobbers
1531 "
1532
1533 TYPES_LIST="
1534     CONDITION_VARIABLE_Ptr
1535     socklen_t
1536     struct_addrinfo
1537     struct_group_source_req
1538     struct_ip_mreq_source
1539     struct_ipv6_mreq
1540     struct_pollfd
1541     struct_rusage_ru_maxrss
1542     struct_sockaddr_in6
1543     struct_sockaddr_sa_len
1544     struct_sockaddr_storage
1545     struct_v4l2_frmivalenum_discrete
1546 "
1547
1548 HAVE_LIST="
1549     $ARCH_EXT_LIST
1550     $(add_suffix _external $ARCH_EXT_LIST)
1551     $(add_suffix _inline   $ARCH_EXT_LIST)
1552     $ARCH_FEATURES
1553     $ATOMICS_LIST
1554     $BUILTIN_LIST
1555     $HAVE_LIST_CMDLINE
1556     $HAVE_LIST_PUB
1557     $HEADERS_LIST
1558     $INTRINSICS_LIST
1559     $MATH_FUNCS
1560     $SYSTEM_FUNCS
1561     $THREADS_LIST
1562     $TOOLCHAIN_FEATURES
1563     $TYPES_LIST
1564     atomics_native
1565     dos_paths
1566     dxva2_lib
1567     libc_msvcrt
1568     libdc1394_1
1569     libdc1394_2
1570     sdl
1571     section_data_rel_ro
1572     threads
1573     vaapi_x11
1574     vdpau_x11
1575     xlib
1576 "
1577
1578 # options emitted with CONFIG_ prefix but not available on the command line
1579 CONFIG_EXTRA="
1580     aandcttables
1581     ac3dsp
1582     audio_frame_queue
1583     audiodsp
1584     blockdsp
1585     bswapdsp
1586     cabac
1587     dvprofile
1588     faandct
1589     faanidct
1590     fdctdsp
1591     flacdsp
1592     fmtconvert
1593     g722dsp
1594     gcrypt
1595     gmp
1596     golomb
1597     gplv3
1598     h263dsp
1599     h264chroma
1600     h264dsp
1601     h264pred
1602     h264qpel
1603     hpeldsp
1604     huffman
1605     huffyuvdsp
1606     huffyuvencdsp
1607     idctdsp
1608     iirfilter
1609     imdct15
1610     intrax8
1611     ividsp
1612     jpegtables
1613     libx262
1614     lgplv3
1615     lpc
1616     me_cmp
1617     mpeg_er
1618     mpegaudio
1619     mpegaudiodsp
1620     mpegvideo
1621     mpegvideoenc
1622     mss34dsp
1623     pixblockdsp
1624     qpeldsp
1625     qsv
1626     qsvdec
1627     qsvenc
1628     rangecoder
1629     riffdec
1630     riffenc
1631     rtpdec
1632     rtpenc_chain
1633     rv34dsp
1634     sinewin
1635     snappy
1636     startcode
1637     texturedsp
1638     texturedspenc
1639     tpeldsp
1640     videodsp
1641     vp3dsp
1642     vp56dsp
1643     vp8dsp
1644     wma_freqs
1645     wmv2dsp
1646 "
1647
1648 CMDLINE_SELECT="
1649     $ARCH_EXT_LIST
1650     $CONFIG_LIST
1651     $HAVE_LIST_CMDLINE
1652     $THREADS_LIST
1653     asm
1654     cross_compile
1655     debug
1656     extra_warnings
1657     logging
1658     lto
1659     optimizations
1660     rpath
1661 "
1662
1663 PATHS_LIST="
1664     bindir
1665     datadir
1666     docdir
1667     incdir
1668     libdir
1669     mandir
1670     prefix
1671     shlibdir
1672 "
1673
1674 CMDLINE_SET="
1675     $PATHS_LIST
1676     ar
1677     arch
1678     as
1679     build_suffix
1680     cc
1681     cpu
1682     cross_prefix
1683     dep_cc
1684     env
1685     extra_version
1686     host_cc
1687     host_cflags
1688     host_ld
1689     host_ldflags
1690     host_libs
1691     host_os
1692     ld
1693     logfile
1694     malloc_prefix
1695     nm
1696     optflags
1697     pkg_config
1698     pkg_config_flags
1699     random_seed
1700     samples
1701     sysinclude
1702     sysroot
1703     target_exec
1704     target_os
1705     target_path
1706     target_samples
1707     toolchain
1708 "
1709
1710 CMDLINE_APPEND="
1711     extra_cflags
1712     host_cppflags
1713 "
1714
1715 # code dependency declarations
1716
1717 # architecture extensions
1718
1719 armv5te_deps="arm"
1720 armv6_deps="arm"
1721 armv6t2_deps="arm"
1722 armv8_deps="aarch64"
1723 neon_deps_any="aarch64 arm"
1724 intrinsics_neon_deps="neon"
1725 vfp_deps_any="aarch64 arm"
1726 vfpv3_deps="vfp"
1727
1728 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1729
1730 altivec_deps="ppc"
1731 ppc4xx_deps="ppc"
1732 vsx_deps="altivec"
1733 power8_deps="vsx"
1734
1735 cpunop_deps="i686"
1736 x86_64_select="i686"
1737 x86_64_suggest="fast_cmov"
1738
1739 amd3dnow_deps="mmx"
1740 amd3dnowext_deps="amd3dnow"
1741 i686_deps="x86"
1742 mmx_deps="x86"
1743 mmxext_deps="mmx"
1744 sse_deps="mmxext"
1745 sse2_deps="sse"
1746 sse3_deps="sse2"
1747 ssse3_deps="sse3"
1748 sse4_deps="ssse3"
1749 sse42_deps="sse4"
1750 avx_deps="sse42"
1751 xop_deps="avx"
1752 fma3_deps="avx"
1753 fma4_deps="avx"
1754 avx2_deps="avx"
1755
1756 mmx_external_deps="yasm"
1757 mmx_inline_deps="inline_asm"
1758 mmx_suggest="mmx_external mmx_inline"
1759
1760 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1761     eval dep=\$${ext}_deps
1762     eval ${ext}_external_deps='"${dep}_external"'
1763     eval ${ext}_inline_deps='"${dep}_inline"'
1764     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1765 done
1766
1767 aligned_stack_if_any="aarch64 ppc x86"
1768 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1769 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1770 fast_unaligned_if_any="aarch64 ppc x86"
1771 simd_align_16_if_any="altivec neon sse"
1772
1773 # system capabilities
1774 symver_if_any="symver_asm_label symver_gnu_asm"
1775 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1776
1777 # threading support
1778 atomics_gcc_if="sync_val_compare_and_swap"
1779 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1780 atomics_win32_if="MemoryBarrier"
1781 atomics_native_if_any="$ATOMICS_LIST"
1782 w32threads_deps="atomics_native"
1783 threads_if_any="$THREADS_LIST"
1784
1785 # subsystems
1786 dct_select="rdft"
1787 error_resilience_select="me_cmp"
1788 faandct_deps="faan fdctdsp"
1789 faanidct_deps="faan idctdsp"
1790 intrax8_select="error_resilience"
1791 mdct_select="fft"
1792 rdft_select="fft"
1793 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1794 mpeg_er_select="error_resilience"
1795 mpegaudio_select="mpegaudiodsp"
1796 mpegaudiodsp_select="dct"
1797 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1798 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1799 nvenc_deps_any="dlopen LoadLibrary"
1800 nvenc_extralibs='$ldl'
1801 qsvdec_select="qsv"
1802 qsvenc_select="qsv"
1803
1804 # decoders / encoders
1805 aac_decoder_select="imdct15 mdct sinewin"
1806 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1807 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1808 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1809 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1810 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1811 adpcm_g722_decoder_select="g722dsp"
1812 adpcm_g722_encoder_select="g722dsp"
1813 aic_decoder_select="golomb idctdsp"
1814 alac_encoder_select="lpc"
1815 als_decoder_select="bswapdsp"
1816 amrnb_decoder_select="lsp"
1817 amrwb_decoder_select="lsp"
1818 amv_decoder_select="sp5x_decoder"
1819 ape_decoder_select="bswapdsp"
1820 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1821 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1822 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1823 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1824 atrac1_decoder_select="mdct sinewin"
1825 atrac3_decoder_select="mdct"
1826 atrac3p_decoder_select="mdct sinewin"
1827 bink_decoder_select="blockdsp hpeldsp"
1828 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1829 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1830 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1831 cllc_decoder_select="bswapdsp"
1832 comfortnoise_encoder_select="lpc"
1833 cook_decoder_select="audiodsp mdct sinewin"
1834 cscd_decoder_select="lzo"
1835 cscd_decoder_suggest="zlib"
1836 dca_decoder_select="fmtconvert mdct"
1837 dds_decoder_select="texturedsp"
1838 dnxhd_decoder_select="blockdsp idctdsp"
1839 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1840 dvvideo_decoder_select="dvprofile idctdsp"
1841 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1842 dxa_decoder_deps="zlib"
1843 eac3_decoder_select="ac3_decoder"
1844 eac3_encoder_select="ac3_encoder"
1845 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1846 eatgq_decoder_select="aandcttables idctdsp"
1847 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1848 exr_decoder_deps="zlib"
1849 ffv1_decoder_select="golomb rangecoder"
1850 ffv1_encoder_select="rangecoder"
1851 ffvhuff_decoder_select="huffyuv_decoder"
1852 ffvhuff_encoder_select="huffyuv_encoder"
1853 fic_decoder_select="golomb"
1854 flac_decoder_select="flacdsp golomb"
1855 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1856 flashsv_decoder_deps="zlib"
1857 flashsv_encoder_deps="zlib"
1858 flashsv2_decoder_deps="zlib"
1859 flv_decoder_select="h263_decoder"
1860 flv_encoder_select="h263_encoder"
1861 fourxm_decoder_select="blockdsp bswapdsp"
1862 fraps_decoder_select="bswapdsp huffman"
1863 g2m_decoder_deps="zlib"
1864 g2m_decoder_select="blockdsp idctdsp jpegtables"
1865 h261_decoder_select="mpeg_er mpegvideo"
1866 h261_encoder_select="aandcttables mpegvideoenc"
1867 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1868 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1869 h263i_decoder_select="h263_decoder"
1870 h263p_encoder_select="h263_encoder"
1871 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1872 h264_decoder_suggest="error_resilience"
1873 h264_nvenc_encoder_deps="nvenc"
1874 h264_qsv_decoder_deps="libmfx"
1875 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1876 h264_qsv_encoder_deps="libmfx"
1877 h264_qsv_encoder_select="qsvenc"
1878 hap_decoder_select="snappy texturedsp"
1879 hap_encoder_deps="libsnappy"
1880 hap_encoder_select="texturedspenc"
1881 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1882 hevc_nvenc_encoder_deps="nvenc"
1883 hevc_qsv_encoder_deps="libmfx"
1884 hevc_qsv_decoder_deps="libmfx"
1885 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
1886 hevc_qsv_encoder_select="qsvenc"
1887 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1888 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1889 iac_decoder_select="imc_decoder"
1890 imc_decoder_select="bswapdsp fft mdct sinewin"
1891 indeo3_decoder_select="hpeldsp"
1892 indeo4_decoder_select="ividsp"
1893 indeo5_decoder_select="ividsp"
1894 interplay_video_decoder_select="hpeldsp"
1895 jpegls_decoder_select="golomb mjpeg_decoder"
1896 jpegls_encoder_select="golomb"
1897 jv_decoder_select="blockdsp"
1898 lagarith_decoder_select="huffyuvdsp"
1899 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1900 loco_decoder_select="golomb"
1901 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1902 metasound_decoder_select="lsp mdct sinewin"
1903 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1904 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1905 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1906 mjpegb_decoder_select="mjpeg_decoder"
1907 mlp_decoder_select="mlp_parser"
1908 motionpixels_decoder_select="bswapdsp"
1909 mp1_decoder_select="mpegaudio"
1910 mp1float_decoder_select="mpegaudio"
1911 mp2_decoder_select="mpegaudio"
1912 mp2float_decoder_select="mpegaudio"
1913 mp3_decoder_select="mpegaudio"
1914 mp3adu_decoder_select="mpegaudio"
1915 mp3adufloat_decoder_select="mpegaudio"
1916 mp3float_decoder_select="mpegaudio"
1917 mp3on4_decoder_select="mpegaudio"
1918 mp3on4float_decoder_select="mpegaudio"
1919 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1920 mpc8_decoder_select="mpegaudiodsp"
1921 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1922 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1923 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1924 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1925 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1926 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1927 mpeg2_qsv_decoder_deps="libmfx"
1928 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
1929 mpeg2_qsv_encoder_deps="libmfx"
1930 mpeg2_qsv_encoder_select="qsvenc"
1931 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1932 mpeg4_encoder_select="h263_encoder"
1933 msa1_decoder_select="mss34dsp"
1934 msmpeg4v1_decoder_select="h263_decoder"
1935 msmpeg4v2_decoder_select="h263_decoder"
1936 msmpeg4v2_encoder_select="h263_encoder"
1937 msmpeg4v3_decoder_select="h263_decoder"
1938 msmpeg4v3_encoder_select="h263_encoder"
1939 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1940 mts2_decoder_select="mss34dsp"
1941 mxpeg_decoder_select="mjpeg_decoder"
1942 nellymoser_decoder_select="mdct sinewin"
1943 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1944 nuv_decoder_select="idctdsp lzo"
1945 on2avc_decoder_select="mdct"
1946 opus_decoder_deps="avresample"
1947 opus_decoder_select="imdct15"
1948 png_decoder_deps="zlib"
1949 png_encoder_deps="zlib"
1950 png_encoder_select="huffyuvencdsp"
1951 prores_decoder_select="idctdsp"
1952 prores_encoder_select="fdctdsp"
1953 qcelp_decoder_select="lsp"
1954 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1955 ra_144_encoder_select="audio_frame_queue lpc"
1956 ralf_decoder_select="golomb"
1957 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1958 rv10_encoder_select="h263_encoder"
1959 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1960 rv20_encoder_select="h263_encoder"
1961 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
1962 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
1963 shorten_decoder_select="golomb"
1964 sipr_decoder_select="lsp"
1965 sp5x_decoder_select="mjpeg_decoder"
1966 svq1_decoder_select="hpeldsp"
1967 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1968 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1969 svq3_decoder_suggest="zlib"
1970 tak_decoder_select="audiodsp"
1971 tdsc_decoder_deps="zlib"
1972 tdsc_decoder_select="mjpeg_decoder"
1973 theora_decoder_select="vp3_decoder"
1974 thp_decoder_select="mjpeg_decoder"
1975 tiff_decoder_suggest="zlib"
1976 tiff_encoder_suggest="zlib"
1977 truehd_decoder_select="mlp_decoder"
1978 truemotion2_decoder_select="bswapdsp"
1979 truespeech_decoder_select="bswapdsp"
1980 tscc_decoder_deps="zlib"
1981 txd_decoder_select="texturedsp"
1982 twinvq_decoder_select="mdct lsp sinewin"
1983 utvideo_decoder_select="bswapdsp"
1984 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1985 vble_decoder_select="huffyuvdsp"
1986 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1987 vc1image_decoder_select="vc1_decoder"
1988 vorbis_decoder_select="mdct"
1989 vorbis_encoder_select="mdct"
1990 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1991 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
1992 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
1993 vp6a_decoder_select="vp6_decoder"
1994 vp6f_decoder_select="vp6_decoder"
1995 vp7_decoder_select="h264pred videodsp vp8dsp"
1996 vp8_decoder_select="h264pred videodsp vp8dsp"
1997 vp9_decoder_select="videodsp"
1998 webp_decoder_select="vp8_decoder"
1999 wmapro_decoder_select="mdct sinewin wma_freqs"
2000 wmav1_decoder_select="mdct sinewin wma_freqs"
2001 wmav1_encoder_select="mdct sinewin wma_freqs"
2002 wmav2_decoder_select="mdct sinewin wma_freqs"
2003 wmav2_encoder_select="mdct sinewin wma_freqs"
2004 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2005 wmv1_decoder_select="h263_decoder"
2006 wmv1_encoder_select="h263_encoder"
2007 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2008 wmv2_encoder_select="h263_encoder wmv2dsp"
2009 wmv3_decoder_select="vc1_decoder"
2010 wmv3image_decoder_select="wmv3_decoder"
2011 zerocodec_decoder_deps="zlib"
2012 zlib_decoder_deps="zlib"
2013 zlib_encoder_deps="zlib"
2014 zmbv_decoder_deps="zlib"
2015 zmbv_encoder_deps="zlib"
2016
2017 # hardware accelerators
2018 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2019 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2020 vaapi_deps="va_va_h"
2021 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2022 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2023 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2024
2025 h263_vaapi_hwaccel_deps="vaapi"
2026 h263_vaapi_hwaccel_select="h263_decoder"
2027 h263_vdpau_hwaccel_deps="vdpau"
2028 h263_vdpau_hwaccel_select="h263_decoder"
2029 h264_d3d11va_hwaccel_deps="d3d11va"
2030 h264_d3d11va_hwaccel_select="h264_decoder"
2031 h264_dxva2_hwaccel_deps="dxva2"
2032 h264_dxva2_hwaccel_select="h264_decoder"
2033 h264_mmal_decoder_deps="mmal"
2034 h264_mmal_hwaccel_deps="mmal"
2035 h264_mmal_decoder_select="h264_decoder"
2036 h264_mmal_encoder_deps="mmal"
2037 h264_qsv_hwaccel_deps="libmfx"
2038 h264_vaapi_hwaccel_deps="vaapi"
2039 h264_vaapi_hwaccel_select="h264_decoder"
2040 h264_vda_hwaccel_deps="vda"
2041 h264_vda_hwaccel_select="h264_decoder"
2042 h264_vda_old_hwaccel_deps="vda"
2043 h264_vda_old_hwaccel_select="h264_decoder"
2044 h264_vdpau_hwaccel_deps="vdpau"
2045 h264_vdpau_hwaccel_select="h264_decoder"
2046 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2047 hevc_d3d11va_hwaccel_select="hevc_decoder"
2048 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2049 hevc_dxva2_hwaccel_select="hevc_decoder"
2050 hevc_qsv_hwaccel_deps="libmfx"
2051 mpeg1_vdpau_hwaccel_deps="vdpau"
2052 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2053 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2054 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2055 mpeg2_dxva2_hwaccel_deps="dxva2"
2056 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2057 mpeg2_qsv_hwaccel_deps="libmfx"
2058 mpeg2_vaapi_hwaccel_deps="vaapi"
2059 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2060 mpeg2_vdpau_hwaccel_deps="vdpau"
2061 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2062 mpeg4_vaapi_hwaccel_deps="vaapi"
2063 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2064 mpeg4_vdpau_hwaccel_deps="vdpau"
2065 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2066 vc1_d3d11va_hwaccel_deps="d3d11va"
2067 vc1_d3d11va_hwaccel_select="vc1_decoder"
2068 vc1_dxva2_hwaccel_deps="dxva2"
2069 vc1_dxva2_hwaccel_select="vc1_decoder"
2070 vc1_vaapi_hwaccel_deps="vaapi"
2071 vc1_vaapi_hwaccel_select="vc1_decoder"
2072 vc1_vdpau_hwaccel_deps="vdpau"
2073 vc1_vdpau_hwaccel_select="vc1_decoder"
2074 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2075 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2076 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2077 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2078
2079 # parsers
2080 h264_parser_select="h264_decoder"
2081 hevc_parser_select="golomb"
2082 mpegvideo_parser_select="mpegvideo"
2083 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2084 vc1_parser_select="mpegvideo startcode vc1_decoder"
2085
2086 # bitstream_filters
2087 mjpeg2jpeg_bsf_select="jpegtables"
2088
2089 # external libraries
2090 libdcadec_decoder_deps="libdcadec"
2091 libfaac_encoder_deps="libfaac"
2092 libfaac_encoder_select="audio_frame_queue"
2093 libfdk_aac_decoder_deps="libfdk_aac"
2094 libfdk_aac_encoder_deps="libfdk_aac"
2095 libfdk_aac_encoder_select="audio_frame_queue"
2096 libgsm_decoder_deps="libgsm"
2097 libgsm_encoder_deps="libgsm"
2098 libgsm_ms_decoder_deps="libgsm"
2099 libgsm_ms_encoder_deps="libgsm"
2100 libilbc_decoder_deps="libilbc"
2101 libilbc_encoder_deps="libilbc"
2102 libmp3lame_encoder_deps="libmp3lame"
2103 libmp3lame_encoder_select="audio_frame_queue"
2104 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2105 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2106 libopencore_amrnb_encoder_select="audio_frame_queue"
2107 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2108 libopenh264_encoder_deps="libopenh264"
2109 libopenjpeg_decoder_deps="libopenjpeg"
2110 libopenjpeg_encoder_deps="libopenjpeg"
2111 libopus_decoder_deps="libopus"
2112 libopus_encoder_deps="libopus"
2113 libopus_encoder_select="audio_frame_queue"
2114 libschroedinger_decoder_deps="libschroedinger"
2115 libschroedinger_encoder_deps="libschroedinger"
2116 libspeex_decoder_deps="libspeex"
2117 libspeex_encoder_deps="libspeex"
2118 libspeex_encoder_select="audio_frame_queue"
2119 libtheora_encoder_deps="libtheora"
2120 libtwolame_encoder_deps="libtwolame"
2121 libvo_aacenc_encoder_deps="libvo_aacenc"
2122 libvo_aacenc_encoder_select="audio_frame_queue"
2123 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2124 libvorbis_encoder_deps="libvorbis"
2125 libvorbis_encoder_select="audio_frame_queue"
2126 libvpx_vp8_decoder_deps="libvpx"
2127 libvpx_vp8_encoder_deps="libvpx"
2128 libvpx_vp9_decoder_deps="libvpx"
2129 libvpx_vp9_encoder_deps="libvpx"
2130 libwavpack_encoder_deps="libwavpack"
2131 libwebp_encoder_deps="libwebp"
2132 libx262_encoder_deps="libx262"
2133 libx264_encoder_deps="libx264"
2134 libx265_encoder_deps="libx265"
2135 libxavs_encoder_deps="libxavs"
2136 libxvid_encoder_deps="libxvid"
2137
2138 # demuxers / muxers
2139 ac3_demuxer_select="ac3_parser"
2140 asf_demuxer_select="riffdec"
2141 asf_muxer_select="riffenc"
2142 asf_stream_muxer_select="asf_muxer"
2143 avi_demuxer_select="riffdec"
2144 avi_muxer_select="riffenc"
2145 avisynth_demuxer_deps="avisynth"
2146 avisynth_demuxer_select="riffdec"
2147 caf_demuxer_select="riffdec"
2148 dash_muxer_select="mp4_muxer"
2149 dirac_demuxer_select="dirac_parser"
2150 dv_demuxer_select="dvprofile"
2151 dv_muxer_select="dvprofile"
2152 dxa_demuxer_select="riffdec"
2153 eac3_demuxer_select="ac3_parser"
2154 f4v_muxer_select="mov_muxer"
2155 flac_demuxer_select="flac_parser"
2156 hds_muxer_select="flv_muxer"
2157 hls_muxer_select="mpegts_muxer"
2158 ipod_muxer_select="mov_muxer"
2159 ismv_muxer_select="mov_muxer"
2160 matroska_audio_muxer_select="matroska_muxer"
2161 matroska_demuxer_select="riffdec"
2162 matroska_demuxer_suggest="bzlib lzo zlib"
2163 matroska_muxer_select="riffenc"
2164 mmf_muxer_select="riffenc"
2165 mov_demuxer_select="riffdec"
2166 mov_demuxer_suggest="zlib"
2167 mov_muxer_select="riffenc rtpenc_chain"
2168 mp3_demuxer_select="mpegaudio_parser"
2169 mp4_muxer_select="mov_muxer"
2170 mpegts_muxer_select="adts_muxer latm_muxer"
2171 mpegtsraw_demuxer_select="mpegts_demuxer"
2172 mxf_d10_muxer_select="mxf_muxer"
2173 nut_muxer_select="riffenc"
2174 nuv_demuxer_select="riffdec"
2175 oga_muxer_select="ogg_muxer"
2176 ogg_demuxer_select="golomb"
2177 opus_muxer_select="ogg_muxer"
2178 psp_muxer_select="mov_muxer"
2179 rtp_demuxer_select="sdp_demuxer"
2180 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2181 rtsp_demuxer_select="http_protocol rtpdec"
2182 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2183 sap_demuxer_select="sdp_demuxer"
2184 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2185 sdp_demuxer_select="rtpdec"
2186 smoothstreaming_muxer_select="ismv_muxer"
2187 spdif_muxer_select="aac_parser"
2188 spx_muxer_select="ogg_muxer"
2189 tak_demuxer_select="tak_parser"
2190 tg2_muxer_select="mov_muxer"
2191 tgp_muxer_select="mov_muxer"
2192 w64_demuxer_select="wav_demuxer"
2193 wav_demuxer_select="riffdec"
2194 wav_muxer_select="riffenc"
2195 webm_muxer_select="riffenc"
2196 wtv_demuxer_select="riffdec"
2197 xmv_demuxer_select="riffdec"
2198 xwma_demuxer_select="riffdec"
2199
2200 # indevs / outdevs
2201 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2202 alsa_outdev_deps="alsa_asoundlib_h"
2203 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2204 dv1394_indev_deps="dv1394"
2205 dv1394_indev_select="dv_demuxer"
2206 fbdev_indev_deps="linux_fb_h"
2207 jack_indev_deps="jack_jack_h pthreads"
2208 libcdio_indev_deps="libcdio"
2209 libdc1394_indev_deps="libdc1394"
2210 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2211 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2212 pulse_indev_deps="libpulse"
2213 sndio_indev_deps="sndio_h"
2214 sndio_outdev_deps="sndio_h"
2215 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2216 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2217 vfwcap_indev_extralibs="-lavicap32"
2218 x11grab_indev_deps="x11grab"
2219 x11grab_xcb_indev_deps="libxcb"
2220
2221 # protocols
2222 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2223 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2224 ffrtmpcrypt_protocol_select="tcp_protocol"
2225 ffrtmphttp_protocol_deps="!librtmp_protocol"
2226 ffrtmphttp_protocol_select="http_protocol"
2227 gopher_protocol_select="network"
2228 http_protocol_select="tcp_protocol"
2229 httpproxy_protocol_select="tcp_protocol"
2230 https_protocol_select="tls_protocol"
2231 icecast_protocol_select="http_protocol"
2232 librtmp_protocol_deps="librtmp"
2233 librtmpe_protocol_deps="librtmp"
2234 librtmps_protocol_deps="librtmp"
2235 librtmpt_protocol_deps="librtmp"
2236 librtmpte_protocol_deps="librtmp"
2237 mmsh_protocol_select="http_protocol"
2238 mmst_protocol_select="network"
2239 rtmp_protocol_deps="!librtmp_protocol"
2240 rtmp_protocol_select="tcp_protocol"
2241 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2242 rtmps_protocol_deps="!librtmp_protocol"
2243 rtmps_protocol_select="tls_protocol"
2244 rtmpt_protocol_select="ffrtmphttp_protocol"
2245 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2246 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2247 rtp_protocol_select="udp_protocol"
2248 sctp_protocol_deps="struct_sctp_event_subscribe"
2249 sctp_protocol_select="network"
2250 srtp_protocol_select="rtp_protocol"
2251 tcp_protocol_select="network"
2252 tls_gnutls_protocol_deps="gnutls"
2253 tls_gnutls_protocol_select="tcp_protocol"
2254 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2255 tls_openssl_protocol_select="tcp_protocol"
2256 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2257 udp_protocol_select="network"
2258 unix_protocol_deps="sys_un_h"
2259 unix_protocol_select="network"
2260
2261 # filters
2262 blackframe_filter_deps="gpl"
2263 boxblur_filter_deps="gpl"
2264 bs2b_filter_deps="libbs2b"
2265 cropdetect_filter_deps="gpl"
2266 delogo_filter_deps="gpl"
2267 drawtext_filter_deps="libfreetype"
2268 frei0r_filter_deps="frei0r dlopen"
2269 frei0r_filter_extralibs='$ldl'
2270 frei0r_src_filter_deps="frei0r dlopen"
2271 frei0r_src_filter_extralibs='$ldl'
2272 hqdn3d_filter_deps="gpl"
2273 interlace_filter_deps="gpl"
2274 ocv_filter_deps="libopencv"
2275 resample_filter_deps="avresample"
2276 scale_filter_deps="swscale"
2277
2278 # examples
2279 avcodec_example_deps="avcodec avutil"
2280 filter_audio_example_deps="avfilter avutil"
2281 metadata_example_deps="avformat avutil"
2282 output_example_deps="avcodec avformat avutil swscale"
2283 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2284 transcode_aac_example_deps="avcodec avformat avresample"
2285
2286 # libraries, in linking order
2287 avcodec_deps="avutil"
2288 avdevice_deps="avformat avcodec avutil"
2289 avfilter_deps="avutil"
2290 avformat_deps="avcodec avutil"
2291 avresample_deps="avutil"
2292 swscale_deps="avutil"
2293
2294 # programs
2295 avconv_deps="avcodec avfilter avformat avresample swscale"
2296 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2297                fps_filter null_filter resample_filter scale_filter
2298                setpts_filter trim_filter"
2299 avplay_deps="avcodec avformat avresample swscale sdl"
2300 avplay_libs='$sdl_libs'
2301 avplay_select="rdft transpose_filter hflip_filter vflip_filter"
2302 avprobe_deps="avcodec avformat"
2303
2304 # documentation
2305 pod2man_deps="doc"
2306 texi2html_deps="doc"
2307
2308 # default parameters
2309
2310 logfile="config.log"
2311
2312 # installation paths
2313 prefix_default="/usr/local"
2314 bindir_default='${prefix}/bin'
2315 datadir_default='${prefix}/share/avconv'
2316 docdir_default='${prefix}/share/doc/libav'
2317 incdir_default='${prefix}/include'
2318 libdir_default='${prefix}/lib'
2319 mandir_default='${prefix}/share/man'
2320 shlibdir_default="$libdir_default"
2321
2322 # toolchain
2323 ar_default="ar"
2324 cc_default="gcc"
2325 host_cc_default="gcc"
2326 cp_f="cp -f"
2327 ln_s="ln -s -f"
2328 nm_default="nm -g"
2329 objformat="elf"
2330 pkg_config_default=pkg-config
2331 ranlib="ranlib"
2332 strip="strip"
2333 yasmexe="yasm"
2334
2335 # machine
2336 arch_default=$(uname -m)
2337 cpu="generic"
2338 intrinsics="none"
2339
2340 # OS
2341 target_os_default=$(tolower $(uname -s))
2342 host_os=$target_os_default
2343
2344 # configurable options
2345 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2346
2347 enable asm
2348 enable debug
2349 enable doc
2350 enable faan faandct faanidct
2351 enable optimizations
2352 enable safe_bitstream_reader
2353 enable static
2354 enable swscale_alpha
2355 enable valgrind_backtrace
2356
2357 # By default, enable only those hwaccels that have no external dependencies.
2358 enable d3d11va dxva2 vda vdpau
2359
2360 # build settings
2361 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2362 LIBPREF="lib"
2363 LIBSUF=".a"
2364 FULLNAME='$(NAME)$(BUILDSUF)'
2365 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2366 SLIBPREF="lib"
2367 SLIBSUF=".so"
2368 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2369 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2370 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2371 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2372 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2373 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2374
2375 asflags_filter=echo
2376 cflags_filter=echo
2377 ldflags_filter=echo
2378
2379 AS_C='-c'
2380 AS_O='-o $@'
2381 CC_C='-c'
2382 CC_E='-E -o $@'
2383 CC_O='-o $@'
2384 LD_O='-o $@'
2385 LD_LIB='-l%'
2386 LD_PATH='-L'
2387 HOSTCC_C='-c'
2388 HOSTCC_E='-E -o $@'
2389 HOSTCC_O='-o $@'
2390 HOSTLD_O='-o $@'
2391
2392 host_libs='-lm'
2393 host_cflags_filter=echo
2394 host_ldflags_filter=echo
2395
2396 target_path='$(CURDIR)'
2397
2398 # since the object filename is not given with the -MM flag, the compiler
2399 # is only able to print the basename, and we must add the path ourselves
2400 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2401 DEPFLAGS='-MM'
2402
2403 # find source path
2404 if test -f configure; then
2405     source_path=.
2406 else
2407     source_path=$(cd $(dirname "$0"); pwd)
2408     echo "$source_path" | grep -q '[[:blank:]]' &&
2409         die "Out of tree builds are impossible with whitespace in source path."
2410     test -e "$source_path/config.h" &&
2411         die "Out of tree builds are impossible with config.h in source dir."
2412 fi
2413
2414 for v in "$@"; do
2415     r=${v#*=}
2416     l=${v%"$r"}
2417     r=$(sh_quote "$r")
2418     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2419 done
2420
2421 find_things(){
2422     thing=$1
2423     pattern=$2
2424     file=$source_path/$3
2425     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2426 }
2427
2428 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2429 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2430 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2431 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2432 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2433 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2434 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2435 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2436 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2437 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2438 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2439
2440 ALL_COMPONENTS="
2441     $BSF_LIST
2442     $DECODER_LIST
2443     $DEMUXER_LIST
2444     $ENCODER_LIST
2445     $FILTER_LIST
2446     $HWACCEL_LIST
2447     $INDEV_LIST
2448     $MUXER_LIST
2449     $OUTDEV_LIST
2450     $PARSER_LIST
2451     $PROTOCOL_LIST
2452 "
2453
2454 for n in $COMPONENT_LIST; do
2455     v=$(toupper ${n%s})_LIST
2456     eval enable \$$v
2457     eval ${n}_if_any="\$$v"
2458 done
2459
2460 enable $ARCH_EXT_LIST
2461
2462 die_unknown(){
2463     echo "Unknown option \"$1\"."
2464     echo "See $0 --help for available options."
2465     exit 1
2466 }
2467
2468 print_3_columns() {
2469     cat | tr ' ' '\n' | sort | pr -r -3 -t
2470 }
2471
2472 show_list() {
2473     suffix=_$1
2474     shift
2475     echo $* | sed s/$suffix//g | print_3_columns
2476     exit 0
2477 }
2478
2479 rand_list(){
2480     IFS=', '
2481     set -- $*
2482     unset IFS
2483     for thing; do
2484         comp=${thing%:*}
2485         prob=${thing#$comp}
2486         prob=${prob#:}
2487         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2488         echo "prob ${prob:-0.5}"
2489         printf '%s\n' $comp
2490     done
2491 }
2492
2493 do_random(){
2494     action=$1
2495     shift
2496     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2497     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2498 }
2499
2500 for opt do
2501     optval="${opt#*=}"
2502     case "$opt" in
2503         --extra-ldflags=*)
2504             add_ldflags $optval
2505         ;;
2506         --extra-ldexeflags=*)
2507             add_ldexeflags $optval
2508         ;;
2509         --extra-libs=*)
2510             add_extralibs $optval
2511         ;;
2512         --disable-devices)
2513             disable $INDEV_LIST $OUTDEV_LIST
2514         ;;
2515         --enable-debug=*)
2516             debuglevel="$optval"
2517         ;;
2518         --disable-programs)
2519             disable $PROGRAM_LIST
2520         ;;
2521         --disable-everything)
2522             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2523         ;;
2524         --disable-all)
2525             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2526             disable $LIBRARY_LIST $PROGRAM_LIST doc
2527         ;;
2528         --enable-random|--disable-random)
2529             action=${opt%%-random}
2530             do_random ${action#--} $COMPONENT_LIST
2531         ;;
2532         --enable-random=*|--disable-random=*)
2533             action=${opt%%-random=*}
2534             do_random ${action#--} $optval
2535         ;;
2536         --enable-*=*|--disable-*=*)
2537             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2538             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2539             eval list=\$$(toupper $thing)_LIST
2540             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2541             $action $(filter "$name" $list)
2542         ;;
2543         --enable-avserver|--disable-avserver*)
2544             warn "avserver has been removed, the ${opt} option is only"\
2545                  "provided for compatibility and will be removed in the future"
2546         ;;
2547         --enable-?*|--disable-?*)
2548             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2549             if is_in $option $COMPONENT_LIST; then
2550                 test $action = disable && action=unset
2551                 eval $action \$$(toupper ${option%s})_LIST
2552             elif is_in $option $CMDLINE_SELECT; then
2553                 $action $option
2554             else
2555                 die_unknown $opt
2556             fi
2557         ;;
2558         --list-*)
2559             NAME="${opt#--list-}"
2560             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2561             NAME=${NAME%s}
2562             eval show_list $NAME \$$(toupper $NAME)_LIST
2563         ;;
2564         --help|-h) show_help
2565         ;;
2566         *)
2567             optname="${opt%%=*}"
2568             optname="${optname#--}"
2569             optname=$(echo "$optname" | sed 's/-/_/g')
2570             if is_in $optname $CMDLINE_SET; then
2571                 eval $optname='$optval'
2572             elif is_in $optname $CMDLINE_APPEND; then
2573                 append $optname "$optval"
2574             else
2575                 die_unknown $opt
2576             fi
2577         ;;
2578     esac
2579 done
2580
2581 for e in $env; do
2582     eval "export $e"
2583 done
2584
2585 disabled logging && logfile=/dev/null
2586
2587 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2588 set >> $logfile
2589
2590 case "$toolchain" in
2591     clang-asan)
2592         cc_default="clang"
2593         add_cflags  -fsanitize=address
2594         add_ldflags -fsanitize=address
2595     ;;
2596     clang-tsan)
2597         cc_default="clang"
2598         add_cflags  -fsanitize=thread -pie
2599         add_ldflags -fsanitize=thread -pie
2600     ;;
2601     clang-usan)
2602         cc_default="clang"
2603         add_cflags  -fsanitize=undefined -O1
2604         add_ldflags -fsanitize=undefined
2605     ;;
2606     gcc-asan)
2607         cc_default="gcc"
2608         add_cflags  -fsanitize=address
2609         add_ldflags -fsanitize=address
2610     ;;
2611     gcc-tsan)
2612         cc_default="gcc"
2613         add_cflags  -fsanitize=thread -pie -fPIC
2614         add_ldflags -fsanitize=thread -pie -fPIC
2615     ;;
2616     gcc-usan)
2617         cc_default="gcc"
2618         add_cflags  -fsanitize=undefined
2619         add_ldflags -fsanitize=undefined
2620     ;;
2621     valgrind-massif)
2622         target_exec_default="valgrind"
2623         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2624     ;;
2625     valgrind-memcheck)
2626         target_exec_default="valgrind"
2627         target_exec_args="--track-origins=yes --leak-check=full"
2628     ;;
2629     msvc)
2630         # Check whether the current MSVC version needs the C99 converter.
2631         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2632         # support enough of C99 to build libav. Default to the new
2633         # behaviour if the regexp was unable to match anything, since this
2634         # successfully parses the version number of existing supported
2635         # versions that require the converter (MSVC 2010 and 2012).
2636         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2637         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2638             cc_default="cl"
2639         else
2640             cc_default="c99wrap cl"
2641         fi
2642         ld_default="$source_path/compat/windows/mslink"
2643         nm_default="dumpbin -symbols"
2644         ar_default="lib"
2645         target_os_default="win32"
2646         # Use a relative path for TMPDIR. This makes sure all the
2647         # ffconf temp files are written with a relative path, avoiding
2648         # issues with msys/win32 path conversion for MSVC parameters
2649         # such as -Fo<file> or -out:<file>.
2650         TMPDIR=.
2651     ;;
2652     icl)
2653         cc_default="icl"
2654         ld_default="xilink"
2655         nm_default="dumpbin -symbols"
2656         ar_default="xilib"
2657         target_os_default="win32"
2658         TMPDIR=.
2659     ;;
2660     gcov)
2661         add_cflags  -fprofile-arcs -ftest-coverage
2662         add_ldflags -fprofile-arcs -ftest-coverage
2663     ;;
2664     hardened)
2665         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2666         add_cflags   -fno-strict-overflow -fstack-protector-all
2667         add_ldflags  -Wl,-z,relro -Wl,-z,now
2668     ;;
2669     ?*)
2670         die "Unknown toolchain $toolchain"
2671     ;;
2672 esac
2673
2674 test -n "$cross_prefix" && enable cross_compile
2675
2676 if enabled cross_compile; then
2677     test -n "$arch" && test -n "$target_os" ||
2678         die "Must specify target arch and OS when cross-compiling"
2679 fi
2680
2681 ar_default="${cross_prefix}${ar_default}"
2682 cc_default="${cross_prefix}${cc_default}"
2683 nm_default="${cross_prefix}${nm_default}"
2684 pkg_config_default="${cross_prefix}${pkg_config_default}"
2685 ranlib="${cross_prefix}${ranlib}"
2686 strip="${cross_prefix}${strip}"
2687
2688 sysinclude_default="${sysroot}/usr/include"
2689
2690 set_default arch cc pkg_config sysinclude target_exec target_os
2691 enabled cross_compile || host_cc_default=$cc
2692 set_default host_cc
2693
2694 if ! $pkg_config --version >/dev/null 2>&1; then
2695     warn "$pkg_config not found, library detection may fail."
2696     pkg_config=false
2697 fi
2698
2699 exesuf() {
2700     case $1 in
2701         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2702     esac
2703 }
2704
2705 EXESUF=$(exesuf $target_os)
2706 HOSTEXESUF=$(exesuf $host_os)
2707
2708 # set temporary file name
2709 : ${TMPDIR:=$TEMPDIR}
2710 : ${TMPDIR:=$TMP}
2711 : ${TMPDIR:=/tmp}
2712
2713 if ! check_cmd mktemp -u XXXXXX; then
2714     # simple replacement for missing mktemp
2715     # NOT SAFE FOR GENERAL USE
2716     mktemp(){
2717         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2718     }
2719 fi
2720
2721 tmpfile(){
2722     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2723         (set -C; exec > $tmp) 2>/dev/null ||
2724         die "Unable to create temporary file in $TMPDIR."
2725     append TMPFILES $tmp
2726     eval $1=$tmp
2727 }
2728
2729 trap 'rm -f -- $TMPFILES' EXIT
2730
2731 tmpfile TMPASM .asm
2732 tmpfile TMPC   .c
2733 tmpfile TMPE   $EXESUF
2734 tmpfile TMPH   .h
2735 tmpfile TMPO   .o
2736 tmpfile TMPS   .S
2737 tmpfile TMPSH  .sh
2738 tmpfile TMPV   .ver
2739
2740 unset -f mktemp
2741
2742 chmod +x $TMPE
2743
2744 # make sure we can execute files in $TMPDIR
2745 cat > $TMPSH 2>> $logfile <<EOF
2746 #! /bin/sh
2747 EOF
2748 chmod +x $TMPSH >> $logfile 2>&1
2749 if ! $TMPSH >> $logfile 2>&1; then
2750     cat <<EOF
2751 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2752 variable to another directory and make sure that it is not mounted noexec.
2753 EOF
2754     die "Sanity test failed."
2755 fi
2756
2757 armasm_flags(){
2758     for flag; do
2759         case $flag in
2760             # Filter out MSVC cl.exe options from cflags that shouldn't
2761             # be passed to gas-preprocessor
2762             -M[TD]*)                                            ;;
2763             *)                  echo $flag                      ;;
2764         esac
2765    done
2766 }
2767
2768 ccc_flags(){
2769     for flag; do
2770         case $flag in
2771             -std=c99)           echo -c99                       ;;
2772             -mcpu=*)            echo -arch ${flag#*=}           ;;
2773             -mieee)             echo -ieee                      ;;
2774             -O*|-fast)          echo $flag                      ;;
2775             -fno-math-errno)    echo -assume nomath_errno       ;;
2776             -g)                 echo -g3                        ;;
2777             -Wall)              echo -msg_enable level2         ;;
2778             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2779             -Wl,*)              echo $flag                      ;;
2780             -f*|-W*)                                            ;;
2781             *)                  echo $flag                      ;;
2782         esac
2783    done
2784 }
2785
2786 cparser_flags(){
2787     for flag; do
2788         case $flag in
2789             -Wno-switch)             echo -Wno-switch-enum ;;
2790             -Wno-format-zero-length) ;;
2791             -Wdisabled-optimization) ;;
2792             -Wno-pointer-sign)       echo -Wno-other ;;
2793             *)                       echo $flag ;;
2794         esac
2795     done
2796 }
2797
2798 msvc_common_flags(){
2799     for flag; do
2800         case $flag in
2801             # In addition to specifying certain flags under the compiler
2802             # specific filters, they must be specified here as well or else the
2803             # generic catch all at the bottom will print the original flag.
2804             -Wall)                ;;
2805             -std=c99)             ;;
2806             # Common flags
2807             -fomit-frame-pointer) ;;
2808             -g)                   echo -Z7 ;;
2809             -fno-math-errno)      ;;
2810             -fno-common)          ;;
2811             -fno-signed-zeros)    ;;
2812             -fPIC)                ;;
2813             -mthumb)              ;;
2814             -march=*)             ;;
2815             -lz)                  echo zlib.lib ;;
2816             -lavifil32)           echo vfw32.lib ;;
2817             -lavicap32)           echo vfw32.lib user32.lib ;;
2818             -l*)                  echo ${flag#-l}.lib ;;
2819             -L*)                  echo -libpath:${flag#-L} ;;
2820             *)                    echo $flag ;;
2821         esac
2822     done
2823 }
2824
2825 msvc_flags(){
2826     msvc_common_flags "$@"
2827     for flag; do
2828         case $flag in
2829             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2830                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2831                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2832                                        -wd4273 -wd4554 -wd4701 ;;
2833         esac
2834     done
2835 }
2836
2837 icl_flags(){
2838     msvc_common_flags "$@"
2839     for flag; do
2840         case $flag in
2841             # Despite what Intel's documentation says -Wall, which is supported
2842             # on Windows, does enable remarks so disable them here.
2843             -Wall)                echo $flag -Qdiag-disable:remark ;;
2844             -std=c99)             echo -Qstd=c99 ;;
2845         esac
2846     done
2847 }
2848
2849 pgi_flags(){
2850     for flag; do
2851         case $flag in
2852             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2853             -fomit-frame-pointer) echo -Mnoframe ;;
2854             -g)                   echo -gopt ;;
2855             *)                    echo $flag ;;
2856         esac
2857     done
2858 }
2859
2860 suncc_flags(){
2861     for flag; do
2862         case $flag in
2863             -march=*|-mcpu=*)
2864                 case "${flag#*=}" in
2865                     native)                   echo -xtarget=native       ;;
2866                     v9|niagara)               echo -xarch=sparc          ;;
2867                     ultrasparc)               echo -xarch=sparcvis       ;;
2868                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2869                     i586|pentium)             echo -xchip=pentium        ;;
2870                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2871                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2872                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2873                     pentium4*)          echo -xtarget=pentium4           ;;
2874                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2875                     *-sse3)             echo -xarch=sse3                 ;;
2876                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2877                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2878                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2879                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2880                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2881                     k8|opteron|athlon64|athlon-fx)
2882                                                echo -xarch=sse2a         ;;
2883                     athlon*)                   echo -xarch=pentium_proa  ;;
2884                 esac
2885                 ;;
2886             -std=c99)             echo -xc99              ;;
2887             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2888             -fPIC)                echo -KPIC -xcode=pic32 ;;
2889             -W*,*)                echo $flag              ;;
2890             -f*-*|-W*|-mimpure-text)                      ;;
2891             -shared)              echo -G                 ;;
2892             *)                    echo $flag              ;;
2893         esac
2894     done
2895 }
2896
2897 tms470_flags(){
2898     for flag; do
2899         case $flag in
2900             -march=*|-mcpu=*)
2901                 case "${flag#*=}" in
2902                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2903                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2904                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2905                     armv6*|arm11*)          echo -mv=6   ;;
2906                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2907                                             echo -mv=5e  ;;
2908                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2909                 esac
2910                 ;;
2911             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2912             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2913             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2914             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2915             -msoft-float)   echo --float_support=vfplib       ;;
2916             -O[0-3]|-mf=*)  echo $flag                        ;;
2917             -g)             echo -g -mn                       ;;
2918             -pds=*)         echo $flag                        ;;
2919             -D*|-I*)        echo $flag                        ;;
2920             --gcc|--abi=*)  echo $flag                        ;;
2921             -me)            echo $flag                        ;;
2922         esac
2923     done
2924 }
2925
2926 probe_cc(){
2927     pfx=$1
2928     _cc=$2
2929
2930     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2931     unset _ld_o _ldflags _ld_lib _ld_path
2932     unset _depflags _DEPCMD _DEPFLAGS
2933     _flags_filter=echo
2934
2935     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2936         _type=llvm_gcc
2937         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2938         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2939         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2940         _cflags_speed='-O3'
2941         _cflags_size='-Os'
2942     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2943         _type=gcc
2944         gcc_version=$($_cc --version | head -n1)
2945         gcc_basever=$($_cc -dumpversion)
2946         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2947         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2948         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2949         if ! $_cc -dumpversion | grep -q '^2\.'; then
2950             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2951         fi
2952         _cflags_speed='-O3'
2953         _cflags_size='-Os'
2954     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2955         _type=icc
2956         _ident=$($_cc --version | head -n1)
2957         _depflags='-MMD'
2958         _cflags_speed='-O3'
2959         _cflags_size='-Os'
2960         _cflags_noopt='-O1'
2961     elif $_cc -v 2>&1 | grep -q xlc; then
2962         _type=xlc
2963         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2964         _cflags_speed='-O5'
2965         _cflags_size='-O5 -qcompact'
2966     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2967         _type=ccc
2968         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2969         _DEPFLAGS='-M'
2970         _cflags_speed='-fast'
2971         _cflags_size='-O1'
2972         _flags_filter=ccc_flags
2973     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2974         test -d "$sysroot" || die "No valid sysroot specified."
2975         _type=armcc
2976         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2977         armcc_conf="$PWD/armcc.conf"
2978         $_cc --arm_linux_configure                 \
2979              --arm_linux_config_file="$armcc_conf" \
2980              --configure_sysroot="$sysroot"        \
2981              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2982              die "Error creating armcc configuration file."
2983         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2984         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2985         as_default="${cross_prefix}gcc"
2986         _depflags='-MMD'
2987         _cflags_speed='-O3'
2988         _cflags_size='-Os'
2989     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2990         _type=tms470
2991         _ident=$($_cc -version | head -n1 | tr -s ' ')
2992         _flags='--gcc --abi=eabi -me'
2993         _cc_e='-ppl -fe=$@'
2994         _cc_o='-fe=$@'
2995         _depflags='-ppa -ppd=$(@:.o=.d)'
2996         _cflags_speed='-O3 -mf=5'
2997         _cflags_size='-O3 -mf=2'
2998         _flags_filter=tms470_flags
2999     elif $_cc -v 2>&1 | grep -q clang; then
3000         _type=clang
3001         _ident=$($_cc --version | head -n1)
3002         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3003         _cflags_speed='-O3'
3004         _cflags_size='-Os'
3005     elif $_cc -V 2>&1 | grep -q Sun; then
3006         _type=suncc
3007         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3008         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3009         _DEPFLAGS='-xM1 -xc99'
3010         _ldflags='-std=c99'
3011         _cflags_speed='-O5'
3012         _cflags_size='-O5 -xspace'
3013         _flags_filter=suncc_flags
3014     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3015         _type=pathscale
3016         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3017         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3018         _cflags_speed='-O2'
3019         _cflags_size='-Os'
3020         _flags_filter='filter_out -Wdisabled-optimization'
3021     elif $_cc -v 2>&1 | grep -q Open64; then
3022         _type=open64
3023         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3024         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3025         _cflags_speed='-O2'
3026         _cflags_size='-Os'
3027         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3028     elif $_cc -V 2>&1 | grep -q Portland; then
3029         _type=pgi
3030         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3031         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3032         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3033         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3034         _cflags_noopt="-O1"
3035         _flags_filter=pgi_flags
3036     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3037         _type=armasm
3038         _ident=$($_cc | head -n1)
3039         # 4509: "This form of conditional instruction is deprecated"
3040         _flags="-nologo -ignore 4509"
3041         _flags_filter=armasm_flags
3042     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3043         _type=msvc
3044         _ident=$($_cc 2>&1 | head -n1)
3045         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3046         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3047         _cflags_speed="-O2"
3048         _cflags_size="-O1"
3049         if $_cc -nologo- 2>&1 | grep -q Linker; then
3050             _ld_o='-out:$@'
3051         else
3052             _ld_o='-Fe$@'
3053         fi
3054         _cc_o='-Fo$@'
3055         _cc_e='-P -Fi$@'
3056         _flags_filter=msvc_flags
3057         _ld_lib='lib%.a'
3058         _ld_path='-libpath:'
3059         _flags='-nologo'
3060         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -Dstrtoll=_strtoi64'
3061     elif $_cc 2>&1 | grep -q Intel; then
3062         _type=icl
3063         _ident=$($_cc 2>&1 | head -n1)
3064         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3065         # Not only is O3 broken on 13.x+ but it is slower on all previous
3066         # versions (tested) as well.
3067         _cflags_speed="-O2"
3068         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3069         if $_cc 2>&1 | grep -q Linker; then
3070             _ld_o='-out:$@'
3071         else
3072             _ld_o='-Fe$@'
3073         fi
3074         _cc_o='-Fo$@'
3075         _cc_e='-P'
3076         _flags_filter=icl_flags
3077         _ld_lib='lib%.a'
3078         _ld_path='-libpath:'
3079         # -Qdiag-error to make icl error when seeing certain unknown arguments
3080         _flags='-nologo -Qdiag-error:4044,10157'
3081         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3082         # with MSVC which enables it by default.
3083         _cflags='-D_USE_MATH_DEFINES -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3084     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3085         _type=cparser
3086         _ident=$($_cc --version | head -n1)
3087         _depflags='-MMD'
3088         _cflags_speed='-O4'
3089         _cflags_size='-O2'
3090         _flags_filter=cparser_flags
3091     fi
3092
3093     eval ${pfx}_type=\$_type
3094     eval ${pfx}_ident=\$_ident
3095 }
3096
3097 set_ccvars(){
3098     eval ${1}_C=\${_cc_c-\${${1}_C}}
3099     eval ${1}_E=\${_cc_e-\${${1}_E}}
3100     eval ${1}_O=\${_cc_o-\${${1}_O}}
3101
3102     if [ -n "$_depflags" ]; then
3103         eval ${1}_DEPFLAGS=\$_depflags
3104     else
3105         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3106         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3107         eval DEP${1}FLAGS=\$_flags
3108     fi
3109 }
3110
3111 probe_cc cc "$cc"
3112 cflags_filter=$_flags_filter
3113 cflags_speed=$_cflags_speed
3114 cflags_size=$_cflags_size
3115 cflags_noopt=$_cflags_noopt
3116 add_cflags $_flags $_cflags
3117 cc_ldflags=$_ldflags
3118 set_ccvars CC
3119
3120 probe_cc hostcc "$host_cc"
3121 host_cflags_filter=$_flags_filter
3122 add_host_cflags  $_flags $_cflags
3123 set_ccvars HOSTCC
3124
3125 test -n "$cc_type" && enable $cc_type ||
3126     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3127
3128 : ${as_default:=$cc}
3129 : ${dep_cc_default:=$cc}
3130 : ${ld_default:=$cc}
3131 : ${host_ld_default:=$host_cc}
3132 set_default ar as dep_cc ld host_ld
3133
3134 probe_cc as "$as"
3135 asflags_filter=$_flags_filter
3136 add_asflags $_flags $_cflags
3137 set_ccvars AS
3138
3139 probe_cc ld "$ld"
3140 ldflags_filter=$_flags_filter
3141 add_ldflags $_flags $_ldflags
3142 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3143 LD_O=${_ld_o-$LD_O}
3144 LD_LIB=${_ld_lib-$LD_LIB}
3145 LD_PATH=${_ld_path-$LD_PATH}
3146
3147 probe_cc hostld "$host_ld"
3148 host_ldflags_filter=$_flags_filter
3149 add_host_ldflags $_flags $_ldflags
3150 HOSTLD_O=${_ld_o-$HOSTLD_O}
3151
3152 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3153     probe_cc depcc "$dep_cc"
3154     CCDEP=${_DEPCMD:-$DEPCMD}
3155     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3156     DEPCCFLAGS=$_flags
3157 fi
3158
3159 if $ar 2>&1 | grep -q Microsoft; then
3160     arflags="-nologo"
3161     ar_o='-out:$@'
3162 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3163     arflags="rq"
3164     ar_o='$@'
3165 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3166     arflags='-Xany -r -c'
3167     ar_o='$@'
3168 else
3169     arflags="rc"
3170     ar_o='$@'
3171 fi
3172
3173 add_cflags $extra_cflags
3174 add_asflags $extra_cflags
3175
3176 if test -n "$sysroot"; then
3177     case "$cc_type" in
3178         gcc|llvm_gcc|clang)
3179             add_cppflags --sysroot="$sysroot"
3180             add_ldflags --sysroot="$sysroot"
3181         ;;
3182         tms470)
3183             add_cppflags -I"$sysinclude"
3184             add_ldflags  --sysroot="$sysroot"
3185         ;;
3186     esac
3187 fi
3188
3189 if test "$cpu" = host; then
3190     enabled cross_compile &&
3191         die "--cpu=host makes no sense when cross-compiling."
3192
3193     case "$cc_type" in
3194         gcc|llvm_gcc)
3195             check_native(){
3196                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3197                 sed -n "/cc1.*$1=/{
3198                             s/.*$1=\\([^ ]*\\).*/\\1/
3199                             p
3200                             q
3201                         }" $TMPE
3202             }
3203             cpu=$(check_native -march || check_native -mcpu)
3204         ;;
3205     esac
3206
3207     test "${cpu:-host}" = host &&
3208         die "--cpu=host not supported with compiler $cc"
3209 fi
3210
3211 # Deal with common $arch aliases
3212 case "$arch" in
3213     aarch64|arm64)
3214         arch="aarch64"
3215     ;;
3216     arm*)
3217         arch="arm"
3218     ;;
3219     mips*|IP*)
3220         arch="mips"
3221     ;;
3222     parisc*|hppa*)
3223         arch="parisc"
3224     ;;
3225     "Power Macintosh"|ppc*|powerpc*)
3226         arch="ppc"
3227     ;;
3228     s390|s390x)
3229         arch="s390"
3230     ;;
3231     sh4|sh)
3232         arch="sh4"
3233     ;;
3234     sun4u|sparc*)
3235         arch="sparc"
3236     ;;
3237     tilegx|tile-gx)
3238         arch="tilegx"
3239     ;;
3240     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3241         arch="x86"
3242     ;;
3243 esac
3244
3245 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3246 enable $arch
3247
3248 # Add processor-specific flags
3249 if enabled aarch64; then
3250
3251     case $cpu in
3252         armv*)
3253             cpuflags="-march=$cpu"
3254         ;;
3255         *)
3256             cpuflags="-mcpu=$cpu"
3257         ;;
3258     esac
3259
3260 elif enabled alpha; then
3261
3262     cpuflags="-mcpu=$cpu"
3263
3264 elif enabled arm; then
3265
3266     check_arm_arch() {
3267         check_cpp_condition stddef.h \
3268             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3269             $cpuflags
3270     }
3271
3272     probe_arm_arch() {
3273         if   check_arm_arch 4;        then echo armv4;
3274         elif check_arm_arch 4T;       then echo armv4t;
3275         elif check_arm_arch 5;        then echo armv5;
3276         elif check_arm_arch 5E;       then echo armv5e;
3277         elif check_arm_arch 5T;       then echo armv5t;
3278         elif check_arm_arch 5TE;      then echo armv5te;
3279         elif check_arm_arch 5TEJ;     then echo armv5te;
3280         elif check_arm_arch 6;        then echo armv6;
3281         elif check_arm_arch 6J;       then echo armv6j;
3282         elif check_arm_arch 6K;       then echo armv6k;
3283         elif check_arm_arch 6Z;       then echo armv6z;
3284         elif check_arm_arch 6ZK;      then echo armv6zk;
3285         elif check_arm_arch 6T2;      then echo armv6t2;
3286         elif check_arm_arch 7;        then echo armv7;
3287         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3288         elif check_arm_arch 7S;       then echo armv7-a;
3289         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3290         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3291         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3292         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3293         fi
3294     }
3295
3296     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3297
3298     case $cpu in
3299         armv*)
3300             cpuflags="-march=$cpu"
3301             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3302         ;;
3303         *)
3304             cpuflags="-mcpu=$cpu"
3305             case $cpu in
3306                 cortex-a*)                               subarch=armv7a  ;;
3307                 cortex-r*)                               subarch=armv7r  ;;
3308                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3309                 arm11*)                                  subarch=armv6   ;;
3310                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3311                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3312                 *)                             subarch=$(probe_arm_arch) ;;
3313             esac
3314         ;;
3315     esac
3316
3317     case "$subarch" in
3318         armv5t*)    enable fast_clz                ;;
3319         armv[6-8]*) enable fast_clz fast_unaligned ;;
3320     esac
3321
3322 elif enabled avr32; then
3323
3324     case $cpu in
3325         ap7[02]0[0-2])
3326             subarch="avr32_ap"
3327             cpuflags="-mpart=$cpu"
3328         ;;
3329         ap)
3330             subarch="avr32_ap"
3331             cpuflags="-march=$cpu"
3332         ;;
3333         uc3[ab]*)
3334             subarch="avr32_uc"
3335             cpuflags="-mcpu=$cpu"
3336         ;;
3337         uc)
3338             subarch="avr32_uc"
3339             cpuflags="-march=$cpu"
3340         ;;
3341     esac
3342
3343 elif enabled bfin; then
3344
3345     cpuflags="-mcpu=$cpu"
3346
3347 elif enabled mips; then
3348
3349     cpuflags="-march=$cpu"
3350
3351 elif enabled ppc; then
3352
3353     disable ldbrx
3354
3355     case $(tolower $cpu) in
3356         601|ppc601|powerpc601)
3357             cpuflags="-mcpu=601"
3358             disable altivec
3359         ;;
3360         603*|ppc603*|powerpc603*)
3361             cpuflags="-mcpu=603"
3362             disable altivec
3363         ;;
3364         604*|ppc604*|powerpc604*)
3365             cpuflags="-mcpu=604"
3366             disable altivec
3367         ;;
3368         g3|75*|ppc75*|powerpc75*)
3369             cpuflags="-mcpu=750"
3370             disable altivec
3371         ;;
3372         g4|745*|ppc745*|powerpc745*)
3373             cpuflags="-mcpu=7450"
3374             disable vsx
3375         ;;
3376         74*|ppc74*|powerpc74*)
3377             cpuflags="-mcpu=7400"
3378             disable vsx
3379         ;;
3380         g5|970|ppc970|powerpc970)
3381             cpuflags="-mcpu=970"
3382             disable vsx
3383         ;;
3384         power[3-6]*)
3385             cpuflags="-mcpu=$cpu"
3386             disable vsx
3387         ;;
3388         power[7-8]*)
3389             cpuflags="-mcpu=$cpu"
3390             enable ldbrx
3391         ;;
3392         cell)
3393             cpuflags="-mcpu=cell"
3394             enable ldbrx
3395             disable vsx
3396         ;;
3397         e500mc)
3398             cpuflags="-mcpu=e500mc"
3399             disable altivec
3400         ;;
3401         e500v2)
3402             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3403             disable altivec
3404             disable dcbzl
3405         ;;
3406         e500)
3407             cpuflags="-mcpu=8540 -mhard-float"
3408             disable altivec
3409             disable dcbzl
3410         ;;
3411     esac
3412
3413 elif enabled sparc; then
3414
3415     case $cpu in
3416         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3417             cpuflags="-mcpu=$cpu"
3418         ;;
3419         ultrasparc*|niagara[234])
3420             cpuflags="-mcpu=$cpu"
3421         ;;
3422     esac
3423
3424 elif enabled x86; then
3425
3426     case $cpu in
3427         i[345]86|pentium)
3428             cpuflags="-march=$cpu"
3429             disable i686
3430             disable mmx
3431         ;;
3432         # targets that do NOT support nopl and conditional mov (cmov)
3433         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3434             cpuflags="-march=$cpu"
3435             disable i686
3436         ;;
3437         # targets that do support nopl and conditional mov (cmov)
3438         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3439             cpuflags="-march=$cpu"
3440             enable i686
3441             enable fast_cmov
3442         ;;
3443         # targets that do support conditional mov but on which it's slow
3444         pentium4|pentium4m|prescott|nocona)
3445             cpuflags="-march=$cpu"
3446             enable i686
3447             disable fast_cmov
3448         ;;
3449     esac
3450
3451 fi
3452
3453 if [ "$cpu" != generic ]; then
3454     add_cflags  $cpuflags
3455     add_asflags $cpuflags
3456 fi
3457
3458 # compiler sanity check
3459 check_exec <<EOF
3460 int main(void){ return 0; }
3461 EOF
3462 if test "$?" != 0; then
3463     echo "$cc is unable to create an executable file."
3464     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3465         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3466         echo "Only do this if you know what cross compiling means."
3467     fi
3468     die "C compiler test failed."
3469 fi
3470
3471 add_cppflags -D_ISOC99_SOURCE
3472 check_cflags -std=c99
3473 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3474 #include <stdlib.h>
3475 EOF
3476 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3477 #include <stdlib.h>
3478 EOF
3479
3480 add_host_cppflags -D_ISOC99_SOURCE
3481 check_host_cflags -std=c99
3482 check_host_cflags -Wall
3483 check_host_cflags -O3
3484
3485 check_64bit(){
3486     arch32=$1
3487     arch64=$2
3488     expr=$3
3489     check_code cc "" "int test[2*($expr) - 1]" &&
3490         subarch=$arch64 || subarch=$arch32
3491 }
3492
3493 case "$arch" in
3494     aarch64|alpha|ia64)
3495         spic=$shared
3496     ;;
3497     mips)
3498         check_64bit mips mips64 '_MIPS_SIM > 1'
3499         spic=$shared
3500     ;;
3501     parisc)
3502         check_64bit parisc parisc64 'sizeof(void *) > 4'
3503         spic=$shared
3504     ;;
3505     ppc)
3506         check_64bit ppc ppc64 'sizeof(void *) > 4'
3507         spic=$shared
3508     ;;
3509     s390)
3510         check_64bit s390 s390x 'sizeof(void *) > 4'
3511         spic=$shared
3512     ;;
3513     sparc)
3514         check_64bit sparc sparc64 'sizeof(void *) > 4'
3515         spic=$shared
3516     ;;
3517     x86)
3518         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3519         if test "$subarch" = "x86_64"; then
3520             spic=$shared
3521         fi
3522     ;;
3523 esac
3524
3525 enable $subarch
3526 enabled spic && enable_weak pic
3527
3528 # OS specific
3529 case $target_os in
3530     aix)
3531         SHFLAGS=-shared
3532         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3533         enabled shared && add_ldflags -Wl,-brtl
3534         ;;
3535     android)
3536         disable symver
3537         enable section_data_rel_ro
3538         SLIB_INSTALL_NAME='$(SLIBNAME)'
3539         SLIB_INSTALL_LINKS=
3540         # soname not set on purpose
3541         SHFLAGS=-shared
3542         ;;
3543     haiku)
3544         prefix_default="/boot/common"
3545         network_extralibs="-lnetwork"
3546         host_libs=
3547         ;;
3548     sunos)
3549         SHFLAGS='-shared -Wl,-h,$$(@F)'
3550         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3551         network_extralibs="-lsocket -lnsl"
3552         # When using suncc to build, the Solaris linker will mark
3553         # an executable with each instruction set encountered by
3554         # the Solaris assembler.  As our libraries contain their own
3555         # guards for processor-specific code, instead suppress
3556         # generation of the HWCAPS ELF section on Solaris x86 only.
3557         enabled_all suncc x86 &&
3558             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3559             add_ldflags -Wl,-M,mapfile
3560         nm_default='nm -P -g'
3561         ;;
3562     netbsd)
3563         disable symver
3564         oss_indev_extralibs="-lossaudio"
3565         oss_outdev_extralibs="-lossaudio"
3566         ;;
3567     openbsd|bitrig)
3568         disable symver
3569         SHFLAGS='-shared'
3570         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3571         SLIB_INSTALL_LINKS=
3572         oss_indev_extralibs="-lossaudio"
3573         oss_outdev_extralibs="-lossaudio"
3574         ;;
3575     dragonfly)
3576         disable symver
3577         ;;
3578     freebsd)
3579         ;;
3580     bsd/os)
3581         add_extralibs -lpoll -lgnugetopt
3582         ;;
3583     darwin)
3584         enabled ppc && add_asflags -force_cpusubtype_ALL
3585         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3586         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3587         add_ldflags -Wl,-dynamic,-search_paths_first
3588         SLIBSUF=".dylib"
3589         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3590         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3591         objformat="macho"
3592         enabled x86_64 && objformat="macho64"
3593         enabled_any pic shared ||
3594             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3595         ;;
3596     mingw32*)
3597         if test $target_os = "mingw32ce"; then
3598             disable network
3599         else
3600             target_os=mingw32
3601         fi
3602         LIBTARGET=i386
3603         if enabled x86_64; then
3604             LIBTARGET="i386:x86-64"
3605         elif enabled arm; then
3606             LIBTARGET=arm-wince
3607         fi
3608         check_ldflags -Wl,--nxcompat
3609         check_ldflags -Wl,--dynamicbase
3610         shlibdir_default="$bindir_default"
3611         SLIBPREF=""
3612         SLIBSUF=".dll"
3613         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3614         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3615         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3616         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3617         SLIB_INSTALL_LINKS=
3618         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3619         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3620         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3621         objformat="win32"
3622         dlltool="${cross_prefix}dlltool"
3623         ranlib=:
3624         enable dos_paths
3625         ;;
3626     win32|win64)
3627         disable symver
3628         if enabled shared; then
3629             # Link to the import library instead of the normal static library
3630             # for shared libs.
3631             LD_LIB='%.lib'
3632             # Cannot build both shared and static libs with MSVC or icl.
3633             disable static
3634         fi
3635         shlibdir_default="$bindir_default"
3636         SLIBPREF=""
3637         SLIBSUF=".dll"
3638         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3639         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3640         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3641         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3642         SLIB_INSTALL_LINKS=
3643         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3644         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3645         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3646         objformat="win32"
3647         ranlib=:
3648         enable dos_paths
3649         ;;
3650     cygwin*)
3651         target_os=cygwin
3652         shlibdir_default="$bindir_default"
3653         SLIBPREF="cyg"
3654         SLIBSUF=".dll"
3655         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3656         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3657         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3658         SLIB_INSTALL_LINKS=
3659         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3660         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3661         objformat="win32"
3662         enable dos_paths
3663         ;;
3664     *-dos|freedos|opendos)
3665         network_extralibs="-lsocket"
3666         objformat="coff"
3667         enable dos_paths
3668         add_cppflags -U__STRICT_ANSI__
3669         ;;
3670     linux)
3671         enable dv1394
3672         enable section_data_rel_ro
3673         ;;
3674     irix*)
3675         target_os=irix
3676         ranlib="echo ignoring ranlib"
3677         ;;
3678     os/2*)
3679         ln_s="cp -f"
3680         objformat="aout"
3681         add_cppflags -D_GNU_SOURCE
3682         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3683         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3684         LIBSUF="_s.a"
3685         SLIBPREF=""
3686         SLIBSUF=".dll"
3687         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3688         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3689         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3690             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3691             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3692             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3693             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3694         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3695             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3696         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3697         enable dos_paths
3698         ;;
3699     gnu/kfreebsd)
3700         add_cppflags -D_BSD_SOURCE
3701         ;;
3702     gnu)
3703         ;;
3704     qnx)
3705         add_cppflags -D_QNX_SOURCE
3706         network_extralibs="-lsocket"
3707         ;;
3708     symbian)
3709         SLIBSUF=".dll"
3710         enable dos_paths
3711         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3712         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3713         add_ldflags -Wl,--target1-abs,--no-undefined \
3714                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3715                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3716         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3717                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3718                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3719         ;;
3720     osf1)
3721         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3722         ;;
3723     minix)
3724         ;;
3725     plan9)
3726         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3727                      -D_REENTRANT_SOURCE        \
3728                      -D_RESEARCH_SOURCE         \
3729                      -DFD_SETSIZE=96            \
3730                      -DHAVE_SOCK_OPTS
3731         add_compat strtod.o strtod=avpriv_strtod
3732         network_extralibs='-lbsd'
3733         exeobjs=compat/plan9/main.o
3734         cp_f='cp'
3735         ;;
3736     none)
3737         ;;
3738     *)
3739         die "Unknown OS '$target_os'."
3740         ;;
3741 esac
3742
3743 # determine libc flavour
3744
3745 probe_libc(){
3746     pfx=$1
3747     pfx_no_=${pfx%_}
3748     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3749     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3750         eval ${pfx}libc_type=uclibc
3751         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3752     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3753         eval ${pfx}libc_type=glibc
3754         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3755     # MinGW headers can be installed on Cygwin, so check for newlib first.
3756     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3757         eval ${pfx}libc_type=newlib
3758         add_${pfx}cppflags -U__STRICT_ANSI__
3759     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3760     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3761         eval ${pfx}libc_type=mingw64
3762         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3763         eval test \$${pfx_no_}cc_type = "gcc" &&
3764             add_${pfx}cppflags -D__printf__=__gnu_printf__
3765     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3766          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3767         eval ${pfx}libc_type=mingw32
3768         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3769             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3770             die "ERROR: MinGW32 runtime version must be >= 3.15."
3771         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3772         eval test \$${pfx_no_}cc_type = "gcc" &&
3773             add_${pfx}cppflags -D__printf__=__gnu_printf__
3774     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3775         eval ${pfx}libc_type=msvcrt
3776         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3777             if [ "$pfx" = host_ ]; then
3778                 add_host_cppflags -Dsnprintf=_snprintf
3779             else
3780                 add_compat strtod.o strtod=avpriv_strtod
3781                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3782                                              _snprintf=avpriv_snprintf  \
3783                                              vsnprintf=avpriv_vsnprintf
3784             fi
3785         fi
3786         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3787         # 0x601 by default unless something else is set by the user.
3788         # This can easily lead to us detecting functions only present
3789         # in such new versions and producing binaries requiring windows 7.0.
3790         # Therefore explicitly set the default to XP unless the user has
3791         # set something else on the command line.
3792         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3793             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3794     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3795         eval ${pfx}libc_type=klibc
3796     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3797         eval ${pfx}libc_type=bionic
3798     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3799         eval ${pfx}libc_type=solaris
3800         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3801     else
3802         eval ${pfx}libc_type=default
3803         add_${pfx}cppflags -D_DEFAULT_SOURCE
3804     fi
3805 }
3806
3807 probe_libc
3808 test -n "$libc_type" && enable libc_$libc_type
3809 probe_libc host_
3810 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3811
3812 case $libc_type in
3813     bionic)
3814         add_compat strtod.o strtod=avpriv_strtod
3815         ;;
3816 esac
3817
3818 # hacks for compiler/libc/os combinations
3819
3820 if enabled_all tms470 libc_glibc; then
3821     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3822     add_cppflags -D__USER_LABEL_PREFIX__=
3823     add_cppflags -D__builtin_memset=memset
3824     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3825     add_cflags   -pds=48    # incompatible redefinition of macro
3826 fi
3827
3828 if enabled_all ccc libc_glibc; then
3829     add_ldflags -Wl,-z,now  # calls to libots crash without this
3830 fi
3831
3832 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3833     add_cppflags '-I\$(SRC_PATH)/compat/float'
3834
3835 esc(){
3836     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3837 }
3838
3839 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3840
3841 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3842
3843 set_default $PATHS_LIST
3844 set_default nm
3845
3846 # we need to build at least one lib type
3847 if ! enabled_any static shared; then
3848     cat <<EOF
3849 At least one library type must be built.
3850 Specify --enable-static to build the static libraries or --enable-shared to
3851 build the shared libraries as well. To only build the shared libraries specify
3852 --disable-static in addition to --enable-shared.
3853 EOF
3854     exit 1;
3855 fi
3856
3857 die_license_disabled() {
3858     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3859 }
3860
3861 die_license_disabled gpl libcdio
3862 die_license_disabled gpl libx264
3863 die_license_disabled gpl libx265
3864 die_license_disabled gpl libxavs
3865 die_license_disabled gpl libxvid
3866 die_license_disabled gpl x11grab
3867
3868 die_license_disabled nonfree libfaac
3869 die_license_disabled nonfree libfdk_aac
3870 die_license_disabled nonfree nvenc
3871 die_license_disabled nonfree openssl
3872
3873 die_license_disabled version3 libopencore_amrnb
3874 die_license_disabled version3 libopencore_amrwb
3875 die_license_disabled version3 libvo_aacenc
3876 die_license_disabled version3 libvo_amrwbenc
3877
3878 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3879
3880 disabled optimizations || check_cflags -fomit-frame-pointer
3881
3882 enable_weak_pic() {
3883     disabled pic && return
3884     enable pic
3885     add_cppflags -DPIC
3886     case "$target_os" in
3887     mingw*|cygwin*)
3888         ;;
3889     *)
3890         add_cflags -fPIC
3891         ;;
3892     esac
3893     add_asflags  -fPIC
3894 }
3895
3896 enabled pic && enable_weak_pic
3897
3898 check_cc <<EOF || die "Symbol mangling check failed."
3899 int ff_extern;
3900 EOF
3901 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3902 extern_prefix=${sym%%ff_extern*}
3903
3904 check_cc <<EOF && enable_weak inline_asm
3905 void foo(void) { __asm__ volatile ("" ::); }
3906 EOF
3907
3908 _restrict=
3909 for restrict_keyword in restrict __restrict__ __restrict; do
3910     check_cc <<EOF && _restrict=$restrict_keyword && break
3911 void foo(char * $restrict_keyword p);
3912 EOF
3913 done
3914
3915 check_cc <<EOF && enable pragma_deprecated
3916 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3917 EOF
3918
3919 check_cc <<EOF && enable attribute_packed
3920 struct { int x; } __attribute__((packed)) x;
3921 EOF
3922
3923 check_cc <<EOF && enable attribute_may_alias
3924 union { int x; } __attribute__((may_alias)) x;
3925 EOF
3926
3927 check_cc <<EOF || die "endian test failed"
3928 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3929 EOF
3930 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3931
3932 check_gas() {
3933     log "check_gas using '$as' as AS"
3934     # :vararg is used on aarch64, arm and ppc altivec
3935     check_as <<EOF || return 1
3936 .macro m n, y:vararg=0
3937 \n: .int \y
3938 .endm
3939 m x
3940 EOF
3941     # .altmacro is only used in arm asm
3942     ! enabled arm || check_as <<EOF || return 1
3943 .altmacro
3944 EOF
3945     enable gnu_as
3946     return 0
3947 }
3948
3949 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3950     nogas=:
3951     enabled_any arm aarch64 && nogas=die
3952     enabled_all ppc altivec && nogas=warn
3953     as_noop=-v
3954
3955     case $as_type in
3956         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3957         gcc)  gaspp_as_type=gas ;;
3958         *)    gaspp_as_type=$as_type ;;
3959     esac
3960
3961     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3962
3963     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3964         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3965
3966     if ! check_gas ; then
3967         as=${gas:=$as}
3968         check_gas || \
3969             $nogas "GNU assembler not found, install/update gas-preprocessor"
3970     fi
3971
3972     check_as <<EOF && enable as_func
3973 .func test
3974 .endfunc
3975 EOF
3976 fi
3977
3978 check_inline_asm inline_asm_labels '"1:\n"'
3979
3980 if enabled aarch64; then
3981     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3982     # internal assembler in clang 3.3 does not support this instruction
3983     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3984     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3985
3986     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3987
3988 elif enabled alpha; then
3989
3990     check_cflags -mieee
3991
3992 elif enabled arm; then
3993
3994     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3995     enabled thumb && check_cflags -mthumb || check_cflags -marm
3996
3997     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3998         enable vfp_args
3999     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4000         case "${cross_prefix:-$cc}" in
4001             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4002             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4003 __asm__ (".eabi_attribute 28, 1");
4004 int main(void) { return 0; }
4005 EOF
4006         esac
4007         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4008     fi
4009
4010     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4011     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4012     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4013     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4014     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4015     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4016
4017     [ $target_os = linux ] || [ $target_os = android ] ||
4018         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4019             $ARCH_EXT_LIST_ARM
4020
4021     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4022
4023     check_as <<EOF && enable as_dn_directive
4024 ra .dn d0.i16
4025 .unreq ra
4026 EOF
4027
4028     # llvm's integrated assembler supports .object_arch from llvm 3.5
4029     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4030 .object_arch armv4
4031 EOF
4032
4033     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4034
4035 elif enabled mips; then
4036
4037     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4038
4039 elif enabled parisc; then
4040
4041     if enabled gcc; then
4042         case $($cc -dumpversion) in
4043             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4044         esac
4045     fi
4046
4047 elif enabled ppc; then
4048
4049     enable local_aligned_8 local_aligned_16
4050
4051     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4052     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4053     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4054     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4055
4056     # AltiVec flags: The FSF version of GCC differs from the Apple version
4057     if enabled altivec; then
4058         check_cflags -maltivec -mabi=altivec &&
4059         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4060         check_cflags -faltivec
4061
4062         # check if our compiler supports Motorola AltiVec C&nb